Nail Care
Get Strong Nail Hardener

4.7
Rated 4.7 out of 5 stars
965

BESTSELLER

A hand holds a bottle of LONDONTOWN Get Strong Nail Hardener, with text noting stronger nails in one week and protection against chipping, splitting, and breakage for optimal nail strength.

A person’s natural nails touch their face, overlaid with stats showing stronger nails after using Get Strong Nail Hardener by LONDONTOWN.

A nail polish brush applies a clear gel with the text: "LONDONTOWN Get Strong Nail Hardener. Multi-Polymer Technology creates a strengthening layer for instantly stronger nails and continued support over time.

Side-by-side comparison of fingernails before and after 3 weeks using LONDONTOWN Get Strong Nail Hardener shows visible improvement in nail condition and strength, with reduced breakage for the strongest nails yet.

A bottle of LONDONTOWN Get Strong Nail Hardener is shown, featuring multi-polymer technology and Florium Complex to boost nail strength and long-lasting hydration—your secret to stronger, healthier nails.

A close-up of hands with long, natural nails against a light blue background, featuring text about applying 1-2 coats of LONDONTOWN Get Strong Nail Hardener for the strongest nails.

4.7
Rated 4.7 out of 5 stars
965

Nail Care
Get Strong Nail Hardener

Strengthening
Breakage Defense
Nail Growth

Strengthening
Breakage Defense
Nail Growth

For your longest, strongest nails

One Time

£20.00

Subscribe and Save 15% 15%

£17.00

Tax included.

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GOOD TO KNOW

Transform nails to be long, strong, and resilient. Two coats of this strengthening treatment featuring innovative, multi-polymer technology create a shield-like barrier that immediately fortifies the nail plate and helps harden over time. Resilience is improved in as little as one week—with a noticeable increase in hardness—and with the infusion of our proprietary Florium Complex, nails get the perfect dose of the hydration and nutrients needed to support healthy nail growth.

Free of phthalates, parabens, silicones, and gluten
Vegan and cruelty-free

12 ml / .4 fl oz

HOW TO USE

As a treatment:

For the first 2 weeks, apply 2 coats to bare nails every other day (remove the old coat before reapplying).
For weeks 3 and 4, apply 2 coats to bare nails every 4-5 days.

Repeat the cycle as needed.

As a base coat:

Apply 1 coat to clean nails.
Follow with your favorite lakur shade.

INGREDIENTS

Ethyl Acetate, Butyl Acetate, Alcohol Denat., Nitrocellulose, Acrylates/Hydroxyesters Acrylates Copolymer, Isopropyl Alcohol, Acetyl Tribuyl Citrate, Adipic Acid/ Neopenyl Glycol/ Trimellitic Anhydride Copolymer, Dipropylene Glycol Dibenzoate, Etocrylene, Brassica Campestris (Rapeseed) Seed Oil, Brassica Campestris Flower Extract, Chamomilla Recutita (Matricaria) Flowe Extract, Cucumis Sativus (Cucumber) Fruit Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Carthamus Tinctorius (Safflower) Seed Oil, Tocopheryl Acetate (Vitamin E), Dimethicone, CI 42090, CI 60725

FREE FROM:

Formaldehyde
Formaldehyde-releasing preservatives
Toluene
Dibutyl phthalate (DBP)
Other phthalates
Formaldehyde resin
Camphor
Xylene
Ethyl tosylamide
Triphenyl phosphate (TPHP/TPP)
Bisphenol A (BPA)
Acetone
Parabens
Sulfates
Added fragrance
Nonylphenol ethoxylate
Glycol ether of Series E
MEHQ/HQ
Methylisothiazolinone (MIT)
Benzophenone
Gluten

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Frequently Asked Questions

What does Get Strong Nail Hardener do?

Get Strong Nail Hardener is an intensive nail strengthening treatment designed to help reinforce weak, brittle, peeling, and breakage-prone nails. Featuring innovative Multi-Polymer Technology and LONDONTOWN's proprietary Florium Complex®, it creates a protective shield over the nail plate while helping improve nail hardness and resilience over time. With continued use, it helps support healthier nail growth by protecting nails from everyday damage.
With regular use, it helps:
- Strengthen weak or brittle nails
- Reduce splitting, peeling, and breakage
- Improve nail resilience
- Protect the nail plate from everyday wear
- Support longer, healthier-looking natural nails
Whether you're recovering from nail damage or simply looking to build stronger natural nails, Get Strong helps provide the reinforcement they need.

Will Get Strong help my nails grow faster?

Get Strong doesn't change your natural nail growth rate, but it helps protect nails from breaking so they can grow to their full potential. Nails grow at their own natural pace, but frequent splitting and breakage can make it difficult to maintain length. By reinforcing the nail plate and improving resilience, Get Strong helps preserve the length you're already growing.
With continued use, it helps:
- Reduce breakage
- Minimize peeling and splitting
- Improve nail durability
- Support stronger, healthier-looking nails over time
For many people, stronger nails mean they're finally able to grow and maintain longer natural nails.

How is Get Strong Nail Hardener different from Luxe Length Nail Gloss?

Both formulas help strengthen natural nails, but they're designed for different goals. Get Strong Nail Hardener is an intensive strengthening treatment for nails that are weak, peeling, splitting, or damaged. Luxe Length Nail Gloss is an everyday treatment gloss that helps protect nail length by reducing breakage while leaving behind a healthy-looking glossy finish.

If your nails are severely weakened or recovering from damage, Get Strong is the better choice. If your nails are generally healthy but prone to breakage as they grow, Luxe Length Nail Gloss is ideal for everyday maintenance.

Can I wear Get Strong Nail Hardener under nail polish?

Yes. Get Strong Nail Hardener can be used as both an intensive treatment and a strengthening base coat. When following the treatment regimen, apply it to bare nails according to the recommended schedule. If you're wearing polish, simply apply one coat to clean nails before your favorite lakur shade to add an extra layer of protection beneath your manicure.
Using it as a base coat helps:
- Reinforce weak nails
- Protect the nail plate beneath polish
- Support healthier-looking nails while wearing color
- Simplify your nail care routine

What is Multi-Polymer Technology?

Multi-Polymer Technology is the clinically-proven, key strengthening technology in Get Strong Nail Hardener. It creates a protective, shield-like layer over the nail plate to immediately reinforce weak nails while helping improve hardness and resilience over time. Combined with LONDONTOWN's proprietary Florium Complex®, it helps strengthen nails while delivering botanical nourishment and hydration.
Together, these technologies help:
- Reinforce weak nails
- Improve nail hardness
- Defend against splitting and breakage
- Support healthier-looking nail growth
- Maintain nail flexibility and hydration

Who should use Get Strong Nail Hardener?

Get Strong Nail Hardener is ideal for anyone with nails that are weak, brittle, peeling, splitting, or prone to frequent breakage. It's especially helpful after repeated gel manicures, acrylic enhancements, excessive polish changes, or whenever nails need extra reinforcement.
It's a great choice if you:
- Have peeling or splitting nails
- Experience frequent breakage
- Are growing out natural nails
- Are recovering after gel or acrylic wear
- Want stronger, more resilient nails
Consistent use helps restore confidence in your natural nails while supporting long-term nail health.

Write a Review (Opens in a new window)

965 reviews

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DS
Dorothy S.
Verified Buyer
I recommend this product
Pros Would Purchase Again
Rated 5 out of 5 stars
1 year ago
Strong Nail Hardener
Loving it. Nails last over 5 days and Wii not buy any other brand
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L
LONDONTOWN
1 year ago
Thank you so much for your fantastic 5-star review, Dorothy!

We’re delighted to hear you’re loving the Get Strong Nail Hardener and seeing such great results, 5+ days of lasting strength is exactly what we hope to deliver. Your loyalty and trust in our brand truly mean the world to us.

Thank you for sharing your experience! ✨
KK
Karen K.
Verified Buyer
I recommend this product
Pros Performs as Described, Would Purchase Again, Exceeds Expectations
Rated 5 out of 5 stars
1 year ago
The Absolute Best
I have used many so called strong nail hardener products from other companies. Nothing comes close to the quality of this from Londontown.
My nails have never been so long and strong!
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HA
Heidi A.
Verified Buyer
I recommend this product
Pros Gentle, Would Purchase Again, Performs as Described
Rated 5 out of 5 stars
1 year ago
Nails definitely stronger
Nails definitely getting stronger after a week
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LS
LISA S.
Verified Buyer
I recommend this product
Pros Performs as Described, Exceeds Expectations, Would Purchase Again
Rated 5 out of 5 stars
1 year ago
This is the bomb! Just buy it!
I never write reviews, but this nail hardener is really amazing. NOTHING has helped strengthen my nails before this. I tried every single product on the market. Spent hundreds of dollars trying to heal my nails after gel manicures. They were paper thin and would not grow. Within 2 weeks of using this product, along with the illuminating polish and base coat, top coat... I have nails again. They are strong and healthy. Regrowing healthy nails was something i almost gave up on until these products.
8f you're on the fence... Just buy it! You will not regret it!
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BT
Barbara T.
Verified Buyer
I recommend this product
Pros Exceeds Expectations
Rated 5 out of 5 stars
1 year ago
Like no other
This was a great surprise. A product that actually works.
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Nail Care Get Strong Nail Hardener 4.7 Rated 4.7 out of 5 stars965 {"averageRating":"4.7","reviewCount":965}

4.7 Rated 4.7 out of 5 stars965 {"averageRating":"4.7","reviewCount":965} Nail Care Get Strong Nail Hardener StrengtheningBreakage DefenseNail Growth

Frequently Asked Questions

Nail Care
Get Strong Nail Hardener

4.7
Rated 4.7 out of 5 stars
965

4.7
Rated 4.7 out of 5 stars
965

Nail Care
Get Strong Nail Hardener

Strengthening
Breakage Defense
Nail Growth