Best Nail Hardener for Weak Nails

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Best Nail Hardener for Weak Nails 

Over the years nails became a symbol of style and even a way of personal expression. Today many women use fingernails as a piece of jewelry: gluing gems and ornaments on them, painting them in several shades, and decorating them with beautiful paintings.

But before all of that, you must keep them strong, healthy, and well built. Beautiful nails begin with a clean, aesthetic and healthy look. When the nails are cracked, weak and splintered, there is no importance to the beautiful nail decorations.

What’s The Best Nail Hardener for Weak Nails?

If you suffer from weak, brittle nails you really should cure and strengthen your nails. Get the best nail hardener for weak nails and keep them healthy and beautiful.

1. OPI Nail Envy Nail Strengthener Review

OPI Nail Envy Nail Strengthener, Original

This product is defiantly doing his job! This nail hardener formula is known to be enriched with calcium and hydrolyzed wheat protein, thus providing maximum aid and reinforcement for weak, fragile and damaged nails, making them stronger and longer.

Actually, we saw some improvement after two weeks of application, the nails became stronger, and they are not splitting like they used to.

How to use

Prep your nail, make sure it’s clean and dry, then apply two coats of OPI nail envy, reapply one coat every other day. After a Week, remove the nail strengthener with non-acetone nail remover and apply the OPI nail envy again.


Ethyl Acetate, Butyl Acetate, Nitrocellulose, Propyl Acetate, Tosylamide/Formaldehyde Resin, Isopropyl Alcohol, Triphenyl Phosphate, Trimethyl Pentanyl Disobutyrate, n-Butyl Alcohol, Formaldehyde, Stearalkonium Bentonite, Camphor, Diacetone Alcohol, Ethyl Tosylamide, Benzophenone-1, Citric Acid, Hydrolyzed Wheat Protein, Dimethicone, Calcium Pantothenate, CI 60725 (Violet 2), CI 77891 (Titanium Dioxide).

Price: $$

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2. Quimica Alemana Nail Hardener Review

3 Bottles Quimica Alemana Nail Hardener Strengthener Polish Treatment 0.47 oz

If your nails are weak, this Colombian nail hardener will defiantly make them strong again and will help them grow faster. Excellent for weak splitting nails. This nail hardener worked great for us, it makes the nails super strong, although some people claim that if the nail hardener touches the cuticle area, it can burn.

How to use

Shake the nail hardener bottle before use. Prep your nails and Apply to clean and dry nails. Apply a thin coat from the center of the nail down once a week.

Make sure you apply the nail hardener only on the nail bed (make sure the nail hardener won’t get to your cuticles or the skin around the nail).


Tosylamide, Formaldehyde Resin, Formaldehyde, Camphor, Nitrocellulose, Castor oil, N-Butyl Alcohol, MEK, Ethyl Acetate, Butyl Acetate, Amyl acetate

Price: $$

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3. Hard as Hoof Nail Strengthening Cream Review

Hard As Hoof Nail Strengthening Cream with Coconut Scent Nail Strengthener, Nail Growth & Conditioning Cuticle Cream Stops Splits, Chips, Cracks & Strengthens Nails, 1 oz
We absolutely love this Hard as hoof nail strengthening cream. If you want to harden your nails and make them beautiful and healthy, this nail strengthening cream is the one for you. This cream contains jojoba oil, Hydrolyzed protein, calcium, and vitamins which are very beneficial for both nails and cuticles.

The remarkable thing about the cream is that you can apply it on your hands and use it as a moisturizing cream and not only as a nail hardener. Read Our tips on How To Repair Damaged Nail Bed After Acrylics And Gels

How to use

Massage the strengthening cream into nail bed and cuticle three times per day or as often as needed. May be used over nail polish.


Purified Water, Aloe Vera Concentrate, Jojoba Oil, Aloe Vera Oil, Glycerin, Glyceryl Stearate, Bees Wax, Hydrolyzed Protein, Calcium Pantothenate, Allantoin, Liposomes, Vitamins A, C, D, & E, DI-Panthenol, Natural Fragrance, Methyl Paraben, Propyl Paraben

Price: $$

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4. Nailtiques Formula 2 Nail Protein Nail Strengthener Review

Nailtiques Formula 2 Nail Protein 0.5 oz.

This nail strengthener is incredible. If you wondered what is the best nail hardener for weak nails on the market today, this one is definitely one of the front-runners.

We absolutely love the Nailtiques formula; it contains hydrolyzed keratin, calcium and the best thing about it that it is doing the job. After one week of application, we saw some good progress and improvement, and we felt the nail became stronger, no splitting.

How to use

Shake before using. Apply one layer of nail hardener daily on dry and clean nails. As nails respond, you can decrease the hardener application. You can apply the Nailtiques 2 nail hardener alone or as a base with color polish. After a Week remove the nail strengthener with non-acetone nail remover and start again.

Precautions: Avoid using another nail product containing hardening agents; It may affect the performance of the Nailtiques nail hardener.


Ethyl Acetate, Butyl Acetate, Nitrocellulose, Tosylamide Formaldehyde Resin, Isopropyl Alcohol, Acrylates Copolymer, Epoxidized Soybean Oil, Wheat Amino Acids, Calcium Pantothenate, Hydrolyzed Keratin, Gelatin, Benzophenone-1, Etocrylene, Violet 2/CI 60725, Dimethicone.

Price: $$$

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5. CND RescueRXx Daily Keratin Treatment Review

Essentials Rescue highly effective new treatment 3.7 ml [Pack 2] This is our top winner! Works Great, and its formaldehyde-free! The CND nail hardener contains a large concentration of natural keratin proteins. 

Taken from unprocessed sheep’s wool (which has been cut non-profit and not forcibly) which penetrate the natural nail and contribute to its strengthening. Jojoba oil extract returns lost moisture to the cuticle and prevent splitting and peeling. The sweet almond oil will soften the cuticle to prevent dryness, cracks, and cuts and retain its elasticity.


Week 1: 80% of the cases reported a marked improvement in the condition of the nails / 80% saw less white spots

Week 4: 80% less peeling / 73% less splitting

How to use

Apply to clean and dry natural nails twice a day, massage the CND hardener on the entire nail, edge, and cuticle. Use up to 4 weeks for ideal results.


Prunus Amygdalus Dulcis (Sweet Almond) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Sorbitan Oleate, Aqua ((Water) Eau), Isopropyl Alcohol, Modified polyamidoamine, Hydrolyzed Keratin, Parfum (Fragrance).

Price: $$$

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Bottom line: This is our best nail hardener for weak nails on the market today.

6. Essie Millionails Nail Treatment, Nail Hardener Review

essie millionails nail treatment, fiber shield + iron strength, 0.46 fl. oz.

The Essie millionails is a nourishing and support product for thin, weak or split fingernails. The nail hardener formula enriched with amino acid and iron.

The Essie nail treatment combines reinforcing elements with a protective nylon base layer. You can apply the Essie nail hardener alone or as a base with color polish.
How to use

Apply one coat of Essie milionails treatment to clean and dry nails.


Butyl Acetate, Ethyl Acetate, Nitrocellulose Propyl Acetate, Tosylamide / Formaldehyde Resin, Isopropyl Alcohol, Trimethyl Pentanyl Diisobutyrate, Triphenyl Phosphate, Ethyl Tosylamide, Stearalkonium Bentonite, Camphor, Nylon-66, Citric Acid, Benzophenone-1, Aqua/Water/Eau, Dimethicone, Butylene Glycol, CL 77891/ Titanium Dioxide, Saccharomyces / Iron Ferment. D158352/3


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7. Duri Rejuvacote 1 Nail Growth System 

duri Rejuvacote 1 Original Maximum Strength Nail Growth System, Base and Top Coat, 0.61 fl.oz.

This top-selling will help you grow beautiful healthy and strong looking nails. This intensive strengthening formula with hydrolyzed keratin hydrolyzed soy protein and calcium. The Duri Rejuvacote will extend the life of your manicure while encouraging strong, healthy nail growth.

This product is excellent for split, weak, brittle, peeling and cracked nails. We saw some significant improvement after 2 weeks of application. You can apply the nail hardener alone or as a base with color polish.

How to use

Apply one coat to clean and dry natural nails daily. Be careful not to apply to cuticles. After a week, remove with polish remover. After you see some improvement, apply every other day or as needed.


Ethyl Acetate, butyl acetate, nitrocellulose, toluene sulfonamide/formaldehyde resin, isopropyl alcohol, n-butyl alcohol, trimethyl penthanyl, dissobutyrate, camphor, hydrolyzed wheat protein, hydrolyzed keratin, hydrolyzed soy protein, calcium pantothenate.

Price: $$$

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Nail Care Tips and Tricks

Apply a Base Coat

Do not give up on your base polish. The base coat connects the natural nail to the colored nail and acts on two levels: The base coat Helps your manicure to last longer.

Basically, “saving” the nails from repeated removal of nail polish (with nail removers such as acetone) that may damage the nail and prevents the penetration of the colored lacquer into the keratin layer.

Invest in buying high-quality polishes

Do not be tempted to buy an unfamiliar nail polish just for its low price. High-quality nail polish is smoothly and evenly applied, which does not create bumps. Low-quality nail polish quickly dehydrates and weakens the nail.


If you suffer from dry skin, buy a moisturizer which contains lactic acid. The low concentration of lactic acid helps to keep your skin moist and beautiful. The lactic acid will prevent the nails from drying and breaking.

Buy a Non-Acetone Nail Polish Remover

The acetone is designed to dissolve the nail polish or glue (in the case of artificial nails). The acetone penetrates the nail, which can dry and break it.

Limit the Use of Acetone to Once a Week.

If your polish is peeling, apply a lighter shade, or replace it with a higher quality nail polish.

Avoid Nail Biting

Nail-biting can damage the aesthetic look of the nail, to be the cause of dry, brittle nails the nails and cause infections. If you find it difficult to quit, there are special preparations with a bitter taste that will help you keep your hand away from your mouth. 


A high-quality nail strengthener can help you treat weak and brittle nails. We added the ingredients list for each of the products. If you suffer from dry, brittle nails, you shouldn’t use a nail hardener with harsh chemicals. Most of the nail hardeners we reviewed can also be used as a base to nail polish application.

Dealing with weak nails? Tell us about your favorite nail hardener.

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