$40 Value
Three LONDONTOWN Strength & Shine Duo products are displayed: a clear coat, a nail strengthener for the strongest nails, and a topcoat. The items are arranged beside a branded product box.
A set of two bottles from LONDONTOWN, the Strength & Shine Duo, includes "Gel Strong Nail Hardener" for the strongest nails and "High Gloss Top Coat" for the shiniest nails. The products are displayed on a white surface with their packaging in the background.
Three LONDONTOWN Strength & Shine Duo products are displayed: a clear coat, a nail strengthener for the strongest nails, and a topcoat. The items are arranged beside a branded product box.
A set of two bottles from LONDONTOWN, the Strength & Shine Duo, includes "Gel Strong Nail Hardener" for the strongest nails and "High Gloss Top Coat" for the shiniest nails. The products are displayed on a white surface with their packaging in the background.
4.5
Rated 4.5 out of 5 stars
21

Strength & Shine Duo

For your strongest, shiniest-looking nails yet
promo-image
25% OFF! Holiday Sale. Use Code: JOY25
  • In stock, ready to ship
  • Inventory on the way
promo-image
Need it by Christmas? Choose "Guaranteed by Christmas" shipping at checkout!
Free Shipping on Orders $50+

Two essentials with an extra boost of kur-infused care. Though this duo is great for all nail types, it’s especially transformative for those weak or soft, peeling nails. Get Strong Nail Hardener uses multi-polymer technology to create a shield-like barrier that immediately fortifies the nail plate and helps harden nails in as little as one week. Use alone, follow with polish, or finish with a layer of High Gloss Top Coat, our most cushiony formula yet for supreme shine.

Set includes full-sized bottles of:


Get Strong Nail Hardener: 

For best results use as a treatment: Apply 2 coats to bare nails every other day for the first 2 weeks. Get Strong Nail Hardener should be removed before applying a fresh coat of treatment. During week 3 and 4 apply 2 coats to bare nails every 4-5 days. Repeat process as needed. 

As a base coat: Apply one coat to clean nails and follow with your favorite lakur shade.

High Gloss Top Coat: Apply a thin, even layer over any lakur. For best results, apply top coat daily or re-apply at first signs of wear to extend the life of manicure or pedicure.


12ml / .4 fl oz each

Get Strong Nail Hardener: 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

High Gloss Top Coat: Ethyl Acetate, Butyl Acetate, Alcohol Denat., Sucrose Benzoate, Cellulose Acetate Butyrate, Nitrocellulose, Acrylates/Hydroxyesters Acrylates Copolymer, Isopropyl Alcohol, Carthamus Tinctorius (Safflower) Seed Oil, Brassica Campestris (Rapeseed) Flower Extract, Chamomilla Recutita (Matricaria) Flower Extract, Cucumis Sativus (Cucumber) Fruit Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Allium Sativum (Garlic) Bulb Extract, Etocrylene, Tocopheryl Acetate, Dimethicone, CI 60725

Strength & Shine Duo
4.5
Rated 4.5 out of 5 stars
Based on 21 reviews
Total 5 star reviews: 15 Total 4 star reviews: 3 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 1
86%would recommend this product
Write a Review (Opens in a new window)
21 reviews
  • TV
    Tammy V.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Strength and shine polish

    My nails are healing from peeling and gives nails are much harder

    Was this helpful?
  • TC
    Theresa C.
    Verified Buyer
    I do not recommend this product
    Rated 1 out of 5 stars
    1 year ago
    IT PEELS NEXT DAY! What a waste on expensive treatment!

    I’ve tried this for almost two weeks. I timed letting each layer dry so to get better results . But each time it peels. It doesn’t adhere to the nails regardless of letting each layer dry for over 10 minutes. It looks nice when it’s first done but for whatever reason the next day I have rough spots and peeling. Total waste of money. Do not recommend. Wish I could get my money back.

    Was this helpful?
    L Profile picture for LONDONTOWN
    LONDONTOWN
    1 year ago

    Thank you for your review, Theresa. We're sorry to hear that the Strength & Shine Duo did not meet your expectations. The longevity of any nail polish can be affected by various factors such as nail prep, application technique, and daily activities. We always aim to provide high-quality products, and your experience is valuable in helping us improve.

    Our customer service team has reached out to gather more details and see how we can make this right. We appreciate you taking the time to share your review, as it helps us continuously enhance our products and services.

    We appreciate you taking the time to share your honest review. We hope you'll give us another opportunity to exceed your expectations in the future.

  • K
    KG
    Verified Buyer
    Rated 3 out of 5 stars
    1 week ago
    Strength YES, Shine NO

    Shortly after purchasing this set, I shared my excitement with a friend who also uses Londontown products, and she lamented that her experience with the top coat was very poor. Well… we are zero for 2 on the top coat. It majorly chipped in 2 days and looked dreadful. I get more wear out of drug store products than this. Unfortunate!

    I will say, however, the nail hardener is fantastic and why this review gets 3 stars instead of 1. It beautifully fills the ridges in my nails and helps them from getting terribly fragile in the winter months. I’ve since repurchased and will continue to do so.

    A resounding yes to the nail hardener but avoid the top coat if you want your manicure to last.

    Was this helpful?
    L Profile picture for LONDONTOWN
    LONDONTOWN
    21 hours ago

    Thanks for sharing your experience with the product, KG. Our customer service team has reached out to you via email to address your concerns and help find a solution that works better for you.

  • J
    Jill
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Good hardener. My nails have improved in a very short time.

    Was this helpful?
  • HP
    Helene P.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Perfect combo of base and top coat

    Glides on smoothly. Top coat leaves perfect shine. Dries quickly.

    Was this helpful?