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4.85 from 700+ reviews · 4.3 on Amazon · Trusted by 10,000+ customersFree UK delivery over £30
Extreme Strengthener Hard to Resist: 3-in-1, use it as a treatment, a base coat or a clear coat, with AHA and PHA, quick dry, vegan, designed in Scandinavia, produced in FranceExtreme Strengthener - HARD TO RESIST

4.85 from 700+ reviews · 4.3 on Amazon · Trusted by 10,000+ customers · Free UK delivery over £30

    4.9 · 11 reviews

    Extreme Strengthener - HARD TO RESIST

    Nailkind Others
    Made for soft, brittle nails
    Treatment, base or clear coat in one
    Two coats twice a week as a treatment
    Up to 85% plant-based
    Vegan and Halal certified

    View shade

    Free UK delivery over £30. Order by 1pm on a working day and it ships the same day.Return unopened items within 14 working days.

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    EXTREME STRENGTHENER - HARD TO RESIST

    This ultimate strengthener is absolutely irresistable!  Team up with our one-of-a-kind treatment and discover a new level of rejuvenation and strength for soft, brittle nails.


    BENEFITS

    • Restores strength to the max
    • Reinforces nails' natural barrier
    • Protects against external aggressions
    • Quick dry formula
    • Gentle to the nails

    DIRECTIONS

    Use as a strengthening treatment (2 coats twice a week), as a base coat (1 coat under the nail polish) or as a clear (2 coats on bare nails).

    INGREDIENTS

    BUTYL ACETATE, ETHYL ACETATE, NITROCELLULOSE, ACETYL TRIBUTYL CITRATE, PROPYLENE GLYCOL/SEBACIC ACID/TRIMELLITIC ANHYDRIDE COPOLYMER, ISOPROPYL ALCOHOL, SILICA, ADIPIC ACID/NEOPENTYL GLYCOL/ TRIMELLITIC ANHYDRIDE COPOLYMER, ACRYLATES COPOLYMER, N-BUTYL ALCOHOL, WATER (AQUA), ETOCRYLENE, GLUCONOLACTONE, GLYCOLIC ACID, FERRIC AMMONIUM FERROCYANIDE (CI 77510), VIOLET 2 (CI 60725)
    • Free UK delivery over £30, otherwise £4.95.
    • Order before 1pm on a working day and it is dispatched the same day.
    • UK delivery takes 2 to 3 working days.
    • Changed your mind? Send unopened items back within 14 working days of delivery. You pay the return postage.

    Which one do I need?

    A manicure has four steps. Pick one product for each.

    1Base

    2Colour

    3Top

    4General care

    Any 3 products £22.95, any 5 £35.95. Mix nail care, shades and gel wraps.

    Worn by people who bought it

    Read the reviews

    What buyers say about Extreme Strengthener - HARD TO RESIST

    Only reviews of Extreme Strengthener - HARD TO RESIST All products 4.85 from 700+ reviews

    Day seven, side by side

    Cheap polish on the left, chipping at the tips. Nailkind with base and top coat on the right, still even a week in.

    Cheap polish
    Chips by day two

    Colour painted straight onto a bare nail has nothing to grip, so it lifts at the tips first.

    Stains underneath

    Dark pigment sinks into the nail plate and leaves it yellow once you take the colour off.

    NailkindCheap polish

    Drag to compare

    Still neat on day seven

    A base coat gives the colour something to hold on to and the top coat seals the free edge.

    Nail left clear

    Up to 85% plant-based, vegan, and no staining once you remove it.

    Questions

    Every shade is photographed on a hand in daylight, on more than one skin tone, with no filter. Screens still vary, so if it is not what you expected, send it back unopened within 14 working days. You pay the return postage.
    Up to two weeks chip free. For the longest wear, paint two thin coats over a base coat and seal the free edge with a top coat.
    Colour works on its own, but polish holds on to a base coat far better than to a bare nail, and a top coat seals the free edge where chips start.
    The formula is free from the ingredients most often flagged, up to 85% plant-based and made in France by a Danish brand. If you are unsure, check the full INCI list with your midwife.
    Yes. Every product is £8.95, so a set of three or five can mix shades, nail care and The Gel Wraps. The Essentials, base coat and top coat together, are £14.95.