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A clear bottle of LONDONTOWN Nail Hardener & Base Coat, promising stronger nails with its unique formula, is showcased with a sleek black cap on a white background.
The bottle of clear nail polish labeled "Nail Hardener & Base Coat by LONDONTOWN" is positioned diagonally on a pink and purple background, promising stronger nails with every application.

Nail Hardener & Base Coat

a fortifying foundation for healthier, stronger-looking nails

12 ml / .4 fl oz

4.8
Rated 4.8 out of 5 stars
346 Reviews
Regular price$20.00
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A dual-action formula that combines the best of botanicals and science to create the ultimate base coat for weak, brittle nails. Designed to condition, shield, and provide a durable surface for optimal polish wear, this base coat goes beyond just being a primer: it cares for nails below the surface, too.

  • Formulated without: Formaldehyde, Toulene, DBP, Camphor, Ethyl Tosylamide, Acetone, Formaldehyde Resin
  • Vegan, gluten-free, cruelty-free

Start with clean nails. Apply one thin, even coat to bare nails. Follow with 1-2 coats of lakur and any kur® top coat as a final touch.

Ethyl Acetate, Butyl Acetate, Alcohol Denat., Nitrocellulose, Acetyl Tributyl Citrate, Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer, Isopropyl Alcohol, Sucrose Acetate Isobutyrate, Etocrylene, Brassica Campestris (Rapeseed) Seed Oil, Oenothera Biennis (Evening Primrose) Flower Extract, Allium Sativum (Garlic) Bulb Extract, Chamomilla Recutita (Matricaria) Flower Extract, Tocopheryl Acetate (Vitamin E), Carthamus Tinctorius (Safflower) Seed Oil, Cucumis Sativus (Cucumber) Fruit Extract, Calcium Pantothenate, Dimethicone, Biotin, CI 60725

Regular price$20.00
/
4.8
Rated 4.8 out of 5 stars
Based on 346 reviews
Total 5 star reviews: 314 Total 4 star reviews: 19 Total 3 star reviews: 6 Total 2 star reviews: 4 Total 1 star reviews: 3
96%would recommend this product
346 reviews
  • K
    Kayla
    I recommend this product
    Pros Conditions, Performs as Described, Exceeds Expectations, Would Purchase Again
    Rated 5 out of 5 stars
    4 months ago
    Kayla

    I’ve been using this base coat/nail hardener for one month straight and I can’t believe how much it’s transformed nails. They’re noticeably stronger; I could never grow my nails out without at least one breaking! This is a MUST HAVE for all you DIY ladies that give yourself manicures. I always wear polish with a glossy top coat for protection.

  • MR
    Mary R.
    Verified Buyer
    I recommend this product
    Pros Smells Great, Exceeds Expectations, Gentle, Conditions, Would Purchase Again
    Rated 5 out of 5 stars
    8 months ago
    Awesome products!

    London town has proven the point. I’ve now gotten rid of all my other nail polish topcoats space coats, and just strictly use London town. They are fantastic. From their price point to the product safety ingredients to actually working. Oh my gosh what more can you want?

  • LM
    Liliana M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    10 months ago
    Survived the cruise life …

    Great base. Keeps my nails polish on without chipping for about a week! The pic is 5 days and going strong.

  • EY
    Emme Y.
    Verified Reviewer
    I recommend this product
    Pros Gentle, Conditions, Performs as Described, Exceeds Expectations, Would Purchase Again
    Rated 5 out of 5 stars
    11 months ago
    Works great

    Been using it for a week and it's keeping my nails from breaking and lifting. Also dries really quickly.

  • JG
    Joy g.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    Love the product

    Which of you should be asking about the regular nail Hardner I saw it on Facebook bought it to try it. It’s the best I had to use on my nails after being with gels off I have ridges but not with your polish.

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