The Best Nail Strengtheners We Tested, Including OPI, Essie, and More

Mar. 15, 2025

In This ArticleView AllIn This ArticleOur Top PicksReviewsOthers We TriedWhat to KnowBehind The ScenesWhy Trust PEOPLE?

In This ArticleView All

In This Article

View All

Our Top Picks

Reviews

Others We Tried

What to Know

Behind The Scenes

Why Trust PEOPLE?

Photo:People / Nathaly Martinez

People / Nathaly Martinez

A good nail strengthener can revive dry, weak nail beds and boost overall nail health. Many factors can affect the health of your nails, including the temperature outside. Nails are more prone to breakage in the colder months as the cold air dries out nail beds and makes them brittle. So, it’s important to add nourishing formulas such as nail strengtheners andcuticle oilsto your beauty regimen to keep those nails healthy — even underlayers of polish.Why Do You Need a Nail Strengthener?Like a hair mask, nail strengtheners penetrate the nail bed with hydrating ingredients. Without ample moisture, nails become ultra-dry, brittle, and prone to breakage.We put 20 formulas to the test, and after eight weeks of testing and a whopping 626 coats, we narrowed it down to 12 nail strengtheners that actually work in keeping your nails healthy.Our Top PicksBest Overall:CND RescueRXx at Amazon$20Jump to ReviewBest Overall (Cheaper):Nailtiques Nail Protein Formula 2 at Amazon$18Jump to ReviewBest Budget:SALEModelones Nail Strengthener at Amazon$10$6Jump to ReviewBest for Nail Growth:Duri Rejuvacote Nail Growth System at Amazon$14Jump to ReviewBest for Cuticles:Essie Nail Strengthener Treatment at Amazon$11Jump to ReviewBest for Manicures:Orly Nail Defense Nail Strengthener at Amazon$11Jump to ReviewBest Long-Lasting:Probelle Nail Strengthener at Amazon$15Jump to ReviewBest Quick Dry:OPI Natural Nail Strengthener at Amazon$12Jump to ReviewBest Application:LONDONTOWN Nail Strengthener at Amazon$20Jump to ReviewBest Scentless:Barielle Nail Strengthener Cream at Amazon$15Jump to Review

A good nail strengthener can revive dry, weak nail beds and boost overall nail health. Many factors can affect the health of your nails, including the temperature outside. Nails are more prone to breakage in the colder months as the cold air dries out nail beds and makes them brittle. So, it’s important to add nourishing formulas such as nail strengtheners andcuticle oilsto your beauty regimen to keep those nails healthy — even underlayers of polish.

Why Do You Need a Nail Strengthener?Like a hair mask, nail strengtheners penetrate the nail bed with hydrating ingredients. Without ample moisture, nails become ultra-dry, brittle, and prone to breakage.

Why Do You Need a Nail Strengthener?

Like a hair mask, nail strengtheners penetrate the nail bed with hydrating ingredients. Without ample moisture, nails become ultra-dry, brittle, and prone to breakage.

We put 20 formulas to the test, and after eight weeks of testing and a whopping 626 coats, we narrowed it down to 12 nail strengtheners that actually work in keeping your nails healthy.

Our Top PicksBest Overall:CND RescueRXx at Amazon$20Jump to ReviewBest Overall (Cheaper):Nailtiques Nail Protein Formula 2 at Amazon$18Jump to ReviewBest Budget:SALEModelones Nail Strengthener at Amazon$10$6Jump to ReviewBest for Nail Growth:Duri Rejuvacote Nail Growth System at Amazon$14Jump to ReviewBest for Cuticles:Essie Nail Strengthener Treatment at Amazon$11Jump to ReviewBest for Manicures:Orly Nail Defense Nail Strengthener at Amazon$11Jump to ReviewBest Long-Lasting:Probelle Nail Strengthener at Amazon$15Jump to ReviewBest Quick Dry:OPI Natural Nail Strengthener at Amazon$12Jump to ReviewBest Application:LONDONTOWN Nail Strengthener at Amazon$20Jump to ReviewBest Scentless:Barielle Nail Strengthener Cream at Amazon$15Jump to Review

Best Overall:CND RescueRXx at Amazon$20Jump to ReviewBest Overall (Cheaper):Nailtiques Nail Protein Formula 2 at Amazon$18Jump to ReviewBest Budget:SALEModelones Nail Strengthener at Amazon$10$6Jump to ReviewBest for Nail Growth:Duri Rejuvacote Nail Growth System at Amazon$14Jump to ReviewBest for Cuticles:Essie Nail Strengthener Treatment at Amazon$11Jump to ReviewBest for Manicures:Orly Nail Defense Nail Strengthener at Amazon$11Jump to ReviewBest Long-Lasting:Probelle Nail Strengthener at Amazon$15Jump to ReviewBest Quick Dry:OPI Natural Nail Strengthener at Amazon$12Jump to ReviewBest Application:LONDONTOWN Nail Strengthener at Amazon$20Jump to ReviewBest Scentless:Barielle Nail Strengthener Cream at Amazon$15Jump to Review

Best Overall:CND RescueRXx at Amazon$20Jump to Review

Best Overall:CND RescueRXx at Amazon$20

Best Overall:

Best Overall (Cheaper):Nailtiques Nail Protein Formula 2 at Amazon$18Jump to Review

Best Overall (Cheaper):Nailtiques Nail Protein Formula 2 at Amazon$18

Best Overall (Cheaper):

Best Budget:SALEModelones Nail Strengthener at Amazon$10$6Jump to Review

Best Budget:SALEModelones Nail Strengthener at Amazon$10$6

Best Budget:

SALE

Best for Nail Growth:Duri Rejuvacote Nail Growth System at Amazon$14Jump to Review

Best for Nail Growth:Duri Rejuvacote Nail Growth System at Amazon$14

Best for Nail Growth:

Best for Cuticles:Essie Nail Strengthener Treatment at Amazon$11Jump to Review

Best for Cuticles:Essie Nail Strengthener Treatment at Amazon$11

Best for Cuticles:

Best for Manicures:Orly Nail Defense Nail Strengthener at Amazon$11Jump to Review

Best for Manicures:Orly Nail Defense Nail Strengthener at Amazon$11

Best for Manicures:

Best Long-Lasting:Probelle Nail Strengthener at Amazon$15Jump to Review

Best Long-Lasting:Probelle Nail Strengthener at Amazon$15

Best Long-Lasting:

Best Quick Dry:OPI Natural Nail Strengthener at Amazon$12Jump to Review

Best Quick Dry:OPI Natural Nail Strengthener at Amazon$12

Best Quick Dry:

Best Application:LONDONTOWN Nail Strengthener at Amazon$20Jump to Review

Best Application:LONDONTOWN Nail Strengthener at Amazon$20

Best Application:

Best Scentless:Barielle Nail Strengthener Cream at Amazon$15Jump to Review

Best Scentless:Barielle Nail Strengthener Cream at Amazon$15

Best Scentless:

Best OverallCND RescueRXxPHOTO: Amazon$20 at Amazon$21 at Target$21 at UltaStar QualitiesFormulated with nourishing sweet almond oilImproved nail strength and cuticle healthEasy to apply and layers nicely under polishRed FlagsRecommended to apply twice a day for best resultsAfter testing 20 formulas, the CND Nail Strengthener RXx Daily Keratin Treatment is the nail strengthener that wowed us the most. This nourishing formula is enriched with sweet almond oil, so it provides strengthening perks while supporting cuticle health and ensuring nails are hydrated and flexible enough to prevent breakage. Since it’s a serum, you need to use it more frequently — similar to a cuticle oil — for the best results. However, it layers nicely under nail polish and has a fantastic brush for easy application.During the eight-week period, we found that our usually thin and brittle nail beds were actually muchhealthier-looking. Our nails not only looked and felt stronger, but our cuticle health improved, too.Size:0.5 oz. |Ingredients:Sweet almond oil |Type:SerumPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisExperts SayCelebrity nail artistElle Gerstein, whose clients include Lindsay Lohan, Shay Mitchell, Blake Lively, Natalie Portman, and Jennifer Lopez, tells PEOPLE that nail strengtheners maintain the hydration needed to support flexibility: the key to strong nails.

Best OverallCND RescueRXxPHOTO: Amazon$20 at Amazon$21 at Target$21 at Ulta

Best OverallCND RescueRXx

Best Overall

CND RescueRXx

PHOTO: Amazon

$20 at Amazon$21 at Target$21 at Ulta

Star QualitiesFormulated with nourishing sweet almond oilImproved nail strength and cuticle healthEasy to apply and layers nicely under polishRed FlagsRecommended to apply twice a day for best results

Star QualitiesFormulated with nourishing sweet almond oilImproved nail strength and cuticle healthEasy to apply and layers nicely under polish

Formulated with nourishing sweet almond oil

Improved nail strength and cuticle health

Easy to apply and layers nicely under polish

Red FlagsRecommended to apply twice a day for best results

Recommended to apply twice a day for best results

After testing 20 formulas, the CND Nail Strengthener RXx Daily Keratin Treatment is the nail strengthener that wowed us the most. This nourishing formula is enriched with sweet almond oil, so it provides strengthening perks while supporting cuticle health and ensuring nails are hydrated and flexible enough to prevent breakage. Since it’s a serum, you need to use it more frequently — similar to a cuticle oil — for the best results. However, it layers nicely under nail polish and has a fantastic brush for easy application.

During the eight-week period, we found that our usually thin and brittle nail beds were actually muchhealthier-looking. Our nails not only looked and felt stronger, but our cuticle health improved, too.

Size:0.5 oz. |Ingredients:Sweet almond oil |Type:Serum

PHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly LewisPHOTO: People / Kelly Lewis

Experts SayCelebrity nail artistElle Gerstein, whose clients include Lindsay Lohan, Shay Mitchell, Blake Lively, Natalie Portman, and Jennifer Lopez, tells PEOPLE that nail strengtheners maintain the hydration needed to support flexibility: the key to strong nails.

Experts Say

Celebrity nail artistElle Gerstein, whose clients include Lindsay Lohan, Shay Mitchell, Blake Lively, Natalie Portman, and Jennifer Lopez, tells PEOPLE that nail strengtheners maintain the hydration needed to support flexibility: the key to strong nails.

Best Overall (Cheaper)Nailtiques Nail Protein Formula 2PHOTO: Amazon$18 at Amazon

Best Overall (Cheaper)Nailtiques Nail Protein Formula 2

Best Overall (Cheaper)

Nailtiques Nail Protein Formula 2

$18 at Amazon

Star QualitiesFormulated with strengthening keratin that improved textureComes in two sizesFast-drying and a little goes a long wayRed FlagsFades between usesStrong smell

Star QualitiesFormulated with strengthening keratin that improved textureComes in two sizesFast-drying and a little goes a long way

Formulated with strengthening keratin that improved texture

Comes in two sizes

Fast-drying and a little goes a long way

Red FlagsFades between usesStrong smell

Fades between uses

Strong smell

Size:0.25 oz., 0.5 oz. |Ingredients:Keratin, gelatin, calcium |Type:Polish

PHOTO: People / Grace CampbellPHOTO: People / Grace CampbellPHOTO: People / Grace CampbellPHOTO: People / Grace CampbellPHOTO: People / Grace Campbell

Best BudgetModelones Nail StrengthenerPHOTO: Amazon$10$6 at AmazonStar Qualities4-free formula dries quickly with a shiny finishOnly need to apply every three daysEasy, even applicationRed FlagsPeels after a few applicationsThis is an even more budget-friendly Amazon find. The nail-strengthening polish can either be worn as a base or top coat. Plus, it has nourishing and strengthening ingredients such as keratin and jojoba oil to support nail bed health and promote more flexibility (resulting in less breakage). You only need to apply it every three days for best results, and it dries quickly so you can easily layer it with other polish. It has a nice sheen to it, but it did peel after a few applications. All things (and under-$7 price) considered, it’s a good budget option.Size:0.5 oz. |Ingredients:Keratin, jojoba oil |Type:PolishPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-Matesevac

Best BudgetModelones Nail StrengthenerPHOTO: Amazon$10$6 at Amazon

Best BudgetModelones Nail Strengthener

Best Budget

Modelones Nail Strengthener

$10$6 at Amazon

Star Qualities4-free formula dries quickly with a shiny finishOnly need to apply every three daysEasy, even applicationRed FlagsPeels after a few applications

Star Qualities4-free formula dries quickly with a shiny finishOnly need to apply every three daysEasy, even application

4-free formula dries quickly with a shiny finish

Only need to apply every three days

Easy, even application

Red FlagsPeels after a few applications

Peels after a few applications

This is an even more budget-friendly Amazon find. The nail-strengthening polish can either be worn as a base or top coat. Plus, it has nourishing and strengthening ingredients such as keratin and jojoba oil to support nail bed health and promote more flexibility (resulting in less breakage). You only need to apply it every three days for best results, and it dries quickly so you can easily layer it with other polish. It has a nice sheen to it, but it did peel after a few applications. All things (and under-$7 price) considered, it’s a good budget option.

Size:0.5 oz. |Ingredients:Keratin, jojoba oil |Type:Polish

PHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-MatesevacPHOTO: People / Maggie Sperduti-Matesevac

Best for Nail GrowthDuri Rejuvacote Nail Growth SystemPHOTO: Amazon$14 at AmazonView on Duri.com

Best for Nail GrowthDuri Rejuvacote Nail Growth System

Best for Nail Growth

Duri Rejuvacote Nail Growth System

$14 at AmazonView on Duri.com

Star QualitiesEasy application processStrengthened nails after four weeks and improved growthMild scent and shiny finishRed FlagsTakes about five minutes to dryHave to apply daily

Star QualitiesEasy application processStrengthened nails after four weeks and improved growthMild scent and shiny finish

Easy application process

Strengthened nails after four weeks and improved growth

Mild scent and shiny finish

Red FlagsTakes about five minutes to dryHave to apply daily

Takes about five minutes to dry

Have to apply daily

Size:0.45 oz. |Ingredients:Hydrolyzed wheat protein, hydrolyzed soy protein, and calcium |Type:Polish

PHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah Roberts

Best for CuticlesEssie Nail Strengthener TreatmentPHOTO: Ulta$11 at Amazon$13$12 at Walmart$11 at UltaStar QualitiesLong-lasting 8-free formulaImproves cuticle healthOnly have to apply once a weekRed FlagsTakes a while to dryCuticles can also benefit from using a nail-strengthening formula. This effective nail strengthener uses a clinically tested MSM technology that strengthens and hydrates the nails, promoting more flexibility and keeping breakage at bay. It moderately helped improve cuticle health and was easy to apply, only needing a few coats once a week. It takes a while to dry, but it doesn’t leave behind a sticky residue. Instead, it creates a shiny, long-lasting finish that doesn’t chip or fade.Size:0.46 oz. |Ingredients:MSM technology |Type:LiquidPHOTO: People / Nathaly MartinezPHOTO: People / Nathaly MartinezPHOTO: People / Nathaly MartinezPHOTO: People / Nathaly Martinez

Best for CuticlesEssie Nail Strengthener TreatmentPHOTO: Ulta$11 at Amazon$13$12 at Walmart$11 at Ulta

Best for CuticlesEssie Nail Strengthener Treatment

Best for Cuticles

Essie Nail Strengthener Treatment

PHOTO: Ulta

$11 at Amazon$13$12 at Walmart$11 at Ulta

Star QualitiesLong-lasting 8-free formulaImproves cuticle healthOnly have to apply once a weekRed FlagsTakes a while to dry

Star QualitiesLong-lasting 8-free formulaImproves cuticle healthOnly have to apply once a week

Long-lasting 8-free formula

Improves cuticle health

Only have to apply once a week

Red FlagsTakes a while to dry

Takes a while to dry

Cuticles can also benefit from using a nail-strengthening formula. This effective nail strengthener uses a clinically tested MSM technology that strengthens and hydrates the nails, promoting more flexibility and keeping breakage at bay. It moderately helped improve cuticle health and was easy to apply, only needing a few coats once a week. It takes a while to dry, but it doesn’t leave behind a sticky residue. Instead, it creates a shiny, long-lasting finish that doesn’t chip or fade.

Size:0.46 oz. |Ingredients:MSM technology |Type:Liquid

PHOTO: People / Nathaly MartinezPHOTO: People / Nathaly MartinezPHOTO: People / Nathaly MartinezPHOTO: People / Nathaly Martinez

Best for ManicuresOrly Nail Defense Nail StrengthenerPHOTO: Amazon$11$10 at Amazon$13 at Ulta$10 at Sallybeauty.comStar QualitiesBase coat formula that layers wellWide brush for easy applicationQuick-drying and improves textureRed FlagsNo shiny finishDoesn’t promote nail growthLayering a nail-strengthening base coat into your at-home manicure routine can significantly improve results. This polish has a large applicator brush that expertly covers the nail in the base coat solution. It’s also quick-drying and non-sticky, so it layers nicely with other polish and top coats. While it doesn’t promote nail growth, it helped mask our nail imperfections and improved the texture over time. While we wish this had a shiny finish for those days when you prefer a more natural manicure look, we love the formula’s subtlety.Size:0.6 oz. |Ingredients:Chamomile flower extract, calcium, hydrolyzed wheat protein |Type:PolishPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna Flam

Best for ManicuresOrly Nail Defense Nail StrengthenerPHOTO: Amazon$11$10 at Amazon$13 at Ulta$10 at Sallybeauty.com

Best for ManicuresOrly Nail Defense Nail Strengthener

Best for Manicures

Orly Nail Defense Nail Strengthener

$11$10 at Amazon$13 at Ulta$10 at Sallybeauty.com

Star QualitiesBase coat formula that layers wellWide brush for easy applicationQuick-drying and improves textureRed FlagsNo shiny finishDoesn’t promote nail growth

Star QualitiesBase coat formula that layers wellWide brush for easy applicationQuick-drying and improves texture

Base coat formula that layers well

Wide brush for easy application

Quick-drying and improves texture

Red FlagsNo shiny finishDoesn’t promote nail growth

No shiny finish

Doesn’t promote nail growth

Layering a nail-strengthening base coat into your at-home manicure routine can significantly improve results. This polish has a large applicator brush that expertly covers the nail in the base coat solution. It’s also quick-drying and non-sticky, so it layers nicely with other polish and top coats. While it doesn’t promote nail growth, it helped mask our nail imperfections and improved the texture over time. While we wish this had a shiny finish for those days when you prefer a more natural manicure look, we love the formula’s subtlety.

Size:0.6 oz. |Ingredients:Chamomile flower extract, calcium, hydrolyzed wheat protein |Type:Polish

PHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna Flam

Best Long-LastingProbelle Nail StrengthenerPHOTO: Amazon$15 at Amazon

Best Long-LastingProbelle Nail Strengthener

Best Long-Lasting

Probelle Nail Strengthener

$15 at Amazon

Star QualitiesFormulated with lots of nourishing ingredientsImproves nail texture and strengthQuick-drying with a high-gloss finishRed FlagsStrong smell

Star QualitiesFormulated with lots of nourishing ingredientsImproves nail texture and strengthQuick-drying with a high-gloss finish

Formulated with lots of nourishing ingredients

Improves nail texture and strength

Quick-drying with a high-gloss finish

Red FlagsStrong smell

Size:0.5 oz. |Ingredients:AHAs, vitamin B5, vitamin C, and hexanal |Type:Polish

PHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah RobertsPHOTO: People / Sarah Roberts

Best Quick DryOPI Natural Nail StrengthenerPHOTO: Amazon$12 at Amazon$12 at Target$12 at UltaStar QualitiesFormulated with vitamins A and EDries instantly and smoothed nailsExcellent applicator brushRed FlagsDoesn’t impact nail growthDoesn’t extend the life of your manicureWe were delighted with how quickly this base coat dries. In our test, it dried almost instantly upon application and left behind a glossy finish. It comes with an applicator brush that improves the efficiency of swiping it across our nails, and we love that it’s formulated with vitamins A and E for added nourishment. Although the formula didn’t impact our nail growth or extend the life of our manicure, it worked well at smoothing out the nail bed’s surface.Size:0.5 oz. |Ingredients:Vitamin A, vitamin E |Type:PolishPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna Flam

Best Quick DryOPI Natural Nail StrengthenerPHOTO: Amazon$12 at Amazon$12 at Target$12 at Ulta

Best Quick DryOPI Natural Nail Strengthener

Best Quick Dry

OPI Natural Nail Strengthener

$12 at Amazon$12 at Target$12 at Ulta

Star QualitiesFormulated with vitamins A and EDries instantly and smoothed nailsExcellent applicator brushRed FlagsDoesn’t impact nail growthDoesn’t extend the life of your manicure

Star QualitiesFormulated with vitamins A and EDries instantly and smoothed nailsExcellent applicator brush

Formulated with vitamins A and E

Dries instantly and smoothed nails

Excellent applicator brush

Red FlagsDoesn’t impact nail growthDoesn’t extend the life of your manicure

Doesn’t impact nail growth

Doesn’t extend the life of your manicure

We were delighted with how quickly this base coat dries. In our test, it dried almost instantly upon application and left behind a glossy finish. It comes with an applicator brush that improves the efficiency of swiping it across our nails, and we love that it’s formulated with vitamins A and E for added nourishment. Although the formula didn’t impact our nail growth or extend the life of our manicure, it worked well at smoothing out the nail bed’s surface.

Size:0.5 oz. |Ingredients:Vitamin A, vitamin E |Type:Polish

PHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna FlamPHOTO: People / Charna Flam

Best ApplicationLONDONTOWN Nail StrengthenerPHOTO: Amazon$20 at AmazonStar QualitiesEffectively strengthened nailsEasy to applyLayers well with polishProtects nails from future damageRed FlagsCan take up to 10 minutes to dryHave to apply multiple times a dayChips and peels easilyIf you don’t mind applying a nail strengthener a few times a day, this one had a simple process thanks to the brush design and formula consistency. Despite requiring multiple daily applications for the best results, the polish was easy to incorporate into our routine. Plus, it effectively strengthened our nails which made the extra effort more than worth it. Multi-polymer technology also helps protect nails from future damage. Although it chips and peels easily when worn on its own, the polish layers well with regular nail polish, so this is a great option for adding a nail-strengthening component toyour at-home manicure routine.Size:0.4 oz. |Ingredients:Multi-polymer technology |Type:PolishPHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren Blatter

Best ApplicationLONDONTOWN Nail StrengthenerPHOTO: Amazon$20 at Amazon

Best ApplicationLONDONTOWN Nail Strengthener

Best Application

LONDONTOWN Nail Strengthener

$20 at Amazon

Star QualitiesEffectively strengthened nailsEasy to applyLayers well with polishProtects nails from future damageRed FlagsCan take up to 10 minutes to dryHave to apply multiple times a dayChips and peels easily

Star QualitiesEffectively strengthened nailsEasy to applyLayers well with polishProtects nails from future damage

Effectively strengthened nails

Easy to apply

Layers well with polish

Protects nails from future damage

Red FlagsCan take up to 10 minutes to dryHave to apply multiple times a dayChips and peels easily

Can take up to 10 minutes to dry

Have to apply multiple times a day

Chips and peels easily

If you don’t mind applying a nail strengthener a few times a day, this one had a simple process thanks to the brush design and formula consistency. Despite requiring multiple daily applications for the best results, the polish was easy to incorporate into our routine. Plus, it effectively strengthened our nails which made the extra effort more than worth it. Multi-polymer technology also helps protect nails from future damage. Although it chips and peels easily when worn on its own, the polish layers well with regular nail polish, so this is a great option for adding a nail-strengthening component toyour at-home manicure routine.

Size:0.4 oz. |Ingredients:Multi-polymer technology |Type:Polish

PHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren BlatterPHOTO: People / Lauren Blatter

Best ScentlessBarielle Nail Strengthener CreamPHOTO: Barielle$15 at AmazonView on Barielle.com

Best ScentlessBarielle Nail Strengthener Cream

Best Scentless

Barielle Nail Strengthener Cream

PHOTO: Barielle

$15 at AmazonView on Barielle.com

Star QualitiesEasy to applyNon-greasy and scentlessStrengthened nails wellRed FlagsHave to use a few times a day

Star QualitiesEasy to applyNon-greasy and scentlessStrengthened nails well

Non-greasy and scentless

Strengthened nails well

Red FlagsHave to use a few times a day

Have to use a few times a day

Size:1 oz. |Ingredients:Glycerin, vitamin E, vegetable protein |Type:Cream

Best ShinyOPI Nail StrengthenerPHOTO: Amazon$20 at Amazon$20 at Target$20 at UltaStar QualitiesWide brush for easy applicationShiny finish that comes in a few different colorsCan last a few weeksRed FlagsThick consistencyTakes longer to dryThis was one of the most interesting formulas we tested because it’s part nail strengthener and part nail polish. It also comes in multiple colors, so you don’t have to use a ton of products to achieve a solid at-home manicure. The polish has a wide brush for easy application, a shiny finish — it’s so shiny that you barely need a top coat — and is enriched with biotin, calcium, and vitamins A, C, and E. It has a thicker consistency, so it takes longer to dry, but it’s honestly worth the extra wait time since it’s a two-in-one formula.Size:0.5 oz. |Ingredients:Biotin, calcium, vitamins A, C, and E |Type:PolishPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina Weiss

Best ShinyOPI Nail StrengthenerPHOTO: Amazon$20 at Amazon$20 at Target$20 at Ulta

Best ShinyOPI Nail Strengthener

Best Shiny

OPI Nail Strengthener

$20 at Amazon$20 at Target$20 at Ulta

Star QualitiesWide brush for easy applicationShiny finish that comes in a few different colorsCan last a few weeksRed FlagsThick consistencyTakes longer to dry

Star QualitiesWide brush for easy applicationShiny finish that comes in a few different colorsCan last a few weeks

Shiny finish that comes in a few different colors

Can last a few weeks

Red FlagsThick consistencyTakes longer to dry

Thick consistency

Takes longer to dry

This was one of the most interesting formulas we tested because it’s part nail strengthener and part nail polish. It also comes in multiple colors, so you don’t have to use a ton of products to achieve a solid at-home manicure. The polish has a wide brush for easy application, a shiny finish — it’s so shiny that you barely need a top coat — and is enriched with biotin, calcium, and vitamins A, C, and E. It has a thicker consistency, so it takes longer to dry, but it’s honestly worth the extra wait time since it’s a two-in-one formula.

Size:0.5 oz. |Ingredients:Biotin, calcium, vitamins A, C, and E |Type:Polish

PHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina WeissPHOTO: People / Sabrina Weiss

Best KitNail Tek Damaged Nails KitPHOTO: Amazon$17$16 at AmazonStar QualitiesComes with three formulas (including a cuticle oil)Noticeably strengthened nails and improved textureEasy to apply and quick dryingRed FlagsFading between usesStrong smellNeed some reinforcement? This kit comes with three products: cuticle oil, strengthener, and ridge filler to repair nail health. While testing, we found that that kit actually resulted in healthier-looking nails. The application process is super easy, and the formula is quick-drying with a subtle shiny finish. The ridge filler also effectively improved nail texture, and despite there being three steps to keep track of, it was all relatively easy to use and incorporate into our routines.We did note the smell is a bit strong, the strengthener fades between uses, and the ridge filler requires an immediate swipe of the top coat to prevent chipping. Nonetheless, these elements work well together to revitalize nail beds.Size:0.5 oz. |Ingredients:N/A |Type:Polish

Best KitNail Tek Damaged Nails KitPHOTO: Amazon$17$16 at Amazon

Best KitNail Tek Damaged Nails Kit

Best Kit

Nail Tek Damaged Nails Kit

$17$16 at Amazon

Star QualitiesComes with three formulas (including a cuticle oil)Noticeably strengthened nails and improved textureEasy to apply and quick dryingRed FlagsFading between usesStrong smell

Star QualitiesComes with three formulas (including a cuticle oil)Noticeably strengthened nails and improved textureEasy to apply and quick drying

Comes with three formulas (including a cuticle oil)

Noticeably strengthened nails and improved texture

Easy to apply and quick drying

Red FlagsFading between usesStrong smell

Fading between uses

Need some reinforcement? This kit comes with three products: cuticle oil, strengthener, and ridge filler to repair nail health. While testing, we found that that kit actually resulted in healthier-looking nails. The application process is super easy, and the formula is quick-drying with a subtle shiny finish. The ridge filler also effectively improved nail texture, and despite there being three steps to keep track of, it was all relatively easy to use and incorporate into our routines.

We did note the smell is a bit strong, the strengthener fades between uses, and the ridge filler requires an immediate swipe of the top coat to prevent chipping. Nonetheless, these elements work well together to revitalize nail beds.

Size:0.5 oz. |Ingredients:N/A |Type:Polish

Other Nail Strengtheners We Tried

Nail Aid Keratin 3 Day Growth Nail Treatment & Strengthener: While we liked the formula’s easy application, fast dry time, and shiny finish, we didn’t see much change in our nails’ strength, and it actually exposed our nail texturemore.

Nailtopia Nail Strengthener: This nail strengthener dries quickly, only requires one coat, and provides a layer of protection for our nails. However, it wasn’t that effective at nail strengthening, and it’s hard to wear under nail polish because of its rough finish.

Olive & June Nail Strengthener: We really wanted to like the Olive & June Nail Strengthener because the marketing and packaging were so cute. However, its tiny brush made the application challenging, and we didn’t see much nail strengthening or growth during the testing period.

Onyx Professional Hard As Hoof Nail Strengthening Cream with Coconut Scent: This nail-strengthening cream is easy to apply, does a fabulous job of moisturizing the nail beds and cuticles, and has a delicious coconut scent. However, it wasn’t very effective as a nail strengthener, and it’s a bit greasy, so the moisturizing effects don’t last.

People / Lauren Blatter

What to Know About Nail Strengtheners

Hydrating Ingredients

In order to achieve stronger nails, you need to aim forhealthiernails. And, to do that, Gerstein says to “look for moisture not just polish to get the healthiest nails ever.” Hydrating the nails can help protect them from becoming brittle and make them look shiny and healthy. Our best overall pick —Cnd Nail Strengthener RXx Daily Keratin Treatment— packs in moisture with key ingredients like sweet almond oil.

Usage and Application

When adding a new formula — such as nail strengtheners — into your beauty routine, you should follow the application instructions for best results. For instance, theDuri Rejuvacote 1 Nail Growth Systemrequires daily use, but when we followed that regimen, we saw actually regrowth in the nail.

However, there are some tricks of the trade that can also up the ante on your nail-strengthening efforts. “If you use [nail strengtheners] after washing hands, it keeps nails flexible so the polish or gel doesn’t separate from the nail,” Gerstein explains. The added hydration can also keep your cuticle health in check, so, reach for that cuticle oil, too.

Brush Size

When applicable, it’s also worth noting the nail strengthener’s brush size as this can inform you of the application process and how easy (or how difficult) it is to swipe the formula onto your nail bed. In general, look for nail strengtheners with brushes that are easy to swipe across the nail in just a couple of passes compared to ones with ultra-thin brushes that make application tedious. TheOrly Nail Defense Nail Strengthenercomes with a fantastic brush that aids that application process immensely.

People / Grace Campbell

Nail strengtheners can havesomeinstant benefits but, in general, they take time to work their magic. We put 20 top nail strengtheners to the test over an eight-week period and, after 626 coats applied, we found 12 formulas that are actually worth it. During this period, we considered important details such as application, effectiveness, and wear.

Keeping all these factors in mind, theCND Nail Strengthener RXx Daily Keratin TreatmentandNailtiques Nail Protein Formula 2were chosen as our best overall picks.

Our Expert PanelElle Gersteinis a celebrity nail artist who has worked with Lindsay Lohan, Shay Mitchell, Blake Lively, Natalie Portman, Jennifer Lopez, and more.

Our Expert Panel

Elle Gersteinis a celebrity nail artist who has worked with Lindsay Lohan, Shay Mitchell, Blake Lively, Natalie Portman, Jennifer Lopez, and more.

What Is PEOPLE Tested?

We created thePEOPLE Tested seal of approvalto help you find the very best products for your life. We use our unique methodology to test products in three labs across the country and with our network of home testers to determine their effectiveness, durability, ease of use, and so much more. Based on the results, we rate and recommend products so you can find the right one for your needs.

In short, PEOPLE Tested provides recommendations you can trust — every day, every purchase.

source: people.com