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.
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat
Nail Hardener & Base Coat

Nail Hardener & Base Coat

2-in-1 strengthener & base coat

12 ml / .4 fl oz

4.8
Rated 4.8 out of 5 stars
351 Reviews
Regular price$20.00
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Our trusted multitasker. This is a dual-action base coat that fortifies and primes, powered by Biotin, antioxidants, and essential vitamins to help strengthen weak or damaged nails. An infusion of our proprietary Florium Complex further nourishes, creating an ideal base that better grips onto polish. Wear it alone as a daily treatment to shield and replenish, or discover how it transforms into a durable base that boosts your mani-pedi’s wear-time with less chipping and breakage.

  • Creates a resilient shield that helps strengthen weak, brittle, or damaged nails
  • Primes nails to better grip onto polish—and help it last
  • Improves mani-pedi longevity by gripping onto polish to prevent chipping and breakage
  • Encourages healthier, stronger-looking nails with a blend of Biotin, vitamins, and botanical ingredients perfectly calibrated to help fortify and nourish with every wear
  • Can be worn alone as a daily treatment that gives nails a natural, healthy-looking finish

All Nail Types

KEY INGREDIENTS

  • Biotin (Vitamin B Complex) helps restore strength and improve flexibility to prevent splitting, breakage, and brittleness
  • Florium Complex deeply replenishes, visibly repairs, and encourages healthy regrowth
  • Nitrocellulose forms a protective shield and creates a semi-occlusive yet breathable barrier to shield nails from further damage & depletion
  • Safflower Oil moisturizes and helps restore dry, brittle, or damaged nails 

INGREDIENTS

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

CLEAN BENEFITS

  • 21+ Free
  • Breathable
  • Certified Vegan
  • Cruelty Free
  • Gluten Free
  • Paraben Free
  • Phthalate Free

Apply a thin and even layer over clean, bare nails. Follow with 1-2 coats of lakur and seal in with your favorite kur top coat. (If you want to maximize strength-boosting properties, finish with Protective Top Coat.)

For best results, wipe down each nail with Strengthening Lacquer Remover or use Pre-Prep Nail Dehydrator before applying your base coat.

Regular price$20.00
/
4.8
Rated 4.8 out of 5 stars
Based on 351 reviews
Total 5 star reviews: 319 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
351 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
    9 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
    11 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
    12 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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