Nail strengthener and hardener
S.O.S Nail Strengthener

£15
£15

  • Repairs
    A clear bottle of Manucurist S.O.S Nail Strengthener with a white cap is displayed upright on a light beige background. The bilingual label suits anyone seeking effective nail repair and care for damaged nails.
  • A bottle of Manucurist S.O.S Rescue Duo for damaged nails on a beige background, with text stating 100% of nails are harder, 97% are healthier, and 93% show improved quality after use.
  • A close-up of Manucurist S.O.S Nail Strengthener—71% plant-based formula for damaged nails—with a brush applying clear liquid and text highlighting AHA (exfoliates), Vitamin C (antioxidant), Vitamin B5 (hydrates), and Hexanol (strengthens).
  • A dropper dispenses clear liquid into a glass bottle. Text: Manucurist S.O.S Nail Strengthener regenerates very damaged nails, softly exfoliates and revitalizes nail contours, and reinforces brittle nails for natural repair and structure.
  • The Manucurist S.O.S Nail Strengthener features an icon for damaged nails and provides targeted nail repair, offering essential care as part of a specialized base coat trio.
  • Two square glass bottles of Manucurist manicure products on a beige background: S.O.S Nail Strengthener with a white cap, and another with a white dropper cap. Both feature minimalist labels and contain clear liquid.
  • Three clear square bottles of Manucurist S.O.S Nail Strengthener sit in a row on a pale peach background, labeled Base S.O.S., Huile verte, and Masque S.O.S.—each formulated for nail repair and strengthening.
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Rescue and revive fragile, brittle, or severely damaged nails with the S.O.S. Base, a powerhouse treatment designed to repair, strengthen, and restore. Its highly concentrated formula, enriched with AHAs, vitamin C, vitamin B5, and hexanal, works like a protective shield, reinforcing the nail plate and revitalizing nails weakened by gel polish or external stressors.

By gently exfoliating, it stimulates cell renewal, strengthens keratin fibers, and enhances nail resilience, promoting visibly healthier, smoother, and stronger nails.

Clinically proven results: In just three weeks, nails appear stronger, harder, and deeply restored—ready to shine with renewed vitality.

What type of nails do you have? Complete our analysis by clicking here and find out!

Applicator: Brush
Nail type: Damaged
Benefits: Repairs and strengthens nails
Usage: As a 2-week treatment
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Free delivery on +£39 orders

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Description

Powered by 78% plant-based ingredients, this vegan treatment is enriched with AHA, Vitamin C, Vitamin B5, and hexanal to hydrate, strengthen, and repair nails from the very first application. Perfect for use between gel manicures, it helps regenerate nails in just one week, restoring their natural resilience and vitality.

  • Repairs & strengthens
  • Multi-vitamin complex for optimal nail health
  • AHA-rich formula to promote renewal
  • Doubles as a protective base coat
  • Housed in a recyclable glass bottle – because beauty should be sustainable!

How should I use it ?

For maintenance, apply alone or before applying your Green nail polish. For an intensive treatment, apply twice a week.

Pro tip ✨

Can be used as a stand-alone treatment or as a classic base coat under Green nail polish – a true 2-in-1!

Ingredients (INCI)

Super ingredients

INCI list

ethyl acetate, butyl acetate, nitrocellulose, adipic acid/neopentyl glycol/trimellitic anhydride copolymer, acetyl tributyl citrate, alcohol, sucrose acetate isobutyrate, HEA IPDI isocyanurate trimer/polycaprolactone diol copolymer, glycolic acid, tris-HEA isocyanurate trimer, n-butyl alcohol, isopropyl alcohol, etocrylene, malic acid, lactic acid, hexanal, trimethylpentanediyl dibenzoate, aqua (water), panthenol, magnesium ascorbyl phosphate, CI 60725 (violet 2), tocopherol
78% bio-sourced
A clear bottle of Manucurist S.O.S Nail Strengthener with a white cap is displayed upright on a light beige background. The bilingual label suits anyone seeking effective nail repair and care for damaged nails.
A bottle of Manucurist S.O.S Rescue Duo for damaged nails on a beige background, with text stating 100% of nails are harder, 97% are healthier, and 93% show improved quality after use.
A close-up of Manucurist S.O.S Nail Strengthener—71% plant-based formula for damaged nails—with a brush applying clear liquid and text highlighting AHA (exfoliates), Vitamin C (antioxidant), Vitamin B5 (hydrates), and Hexanol (strengthens).
A dropper dispenses clear liquid into a glass bottle. Text: Manucurist S.O.S Nail Strengthener regenerates very damaged nails, softly exfoliates and revitalizes nail contours, and reinforces brittle nails for natural repair and structure.
The Manucurist S.O.S Nail Strengthener features an icon for damaged nails and provides targeted nail repair, offering essential care as part of a specialized base coat trio.
Two square glass bottles of Manucurist manicure products on a beige background: S.O.S Nail Strengthener with a white cap, and another with a white dropper cap. Both feature minimalist labels and contain clear liquid.
Three clear square bottles of Manucurist S.O.S Nail Strengthener sit in a row on a pale peach background, labeled Base S.O.S., Huile verte, and Masque S.O.S.—each formulated for nail repair and strengthening.

FAQs

Our Frequently Asked Questions from our customers and community!

Can I use a treatment base coat as a base coat for my Green™ or Green Flash™ polish?

Treatment base coats can be used as a base coat as part of your Green manicure. However, they cannot be used instead of a Green Flash™ base coat, which needs to dry under the lamp.

How many coats of treatment base coat do I need to apply?

A single coat is enough.

Can I use a treatment base coat under Green Flash™?

For maximum staying power, we recommend that you only use Green Flash™ Base Coat.

Can treatment base coats be removed with Green Flash™ Nail Polish Remover?

All our treatment base coats can be removed like our polish - with our Nail Polish Remover or Green Flash™ Nail Polish Remover.

If I want to apply more treatment base coat, should I remove the old coat first?

When using a treatment base coat, there's no need to remove the previous coat.

Our customers talk about us!

Our reviews are collected 28 days after any purchase and these are the reviews of verified buyers only

Overall rating: 4.7020245 / 5 from 1235 reviews.

AI Generated Review Summary

The S.O.S Nail Strengthener is praised for its effective treatment that repairs, strengthens, and restores brittle and damaged nails. Customers appreciate its beautiful and shiny finish, noticeable improvements, and the healthy look it provides to their nails. While some customers report significant improvements, others see no effect, and opinions on the nails themselves vary.

Summary topics

  • Base Effectiveness (15%): A significant number of customers stated that the S.O.S base is excellent and effective.
  • Polish Effectiveness (5%): It was observed by customers that this nourishing nail polish has been very helpful for their brittle and chipping nails.
  • Product Finish (3%): Customers expressed appreciation for the beautiful and shiny finish that this product provides to their nails.
  • Product Results (3%): It was reported by customers that the product delivers good visible results and is highly effective in improving nails.
  • Nail Appearance (4%): Customers keep praising the look of the product, mentioning that it makes their nails look healthier and stronger.

Review topics: [color, smell, feel, problem, quality, improvement, look, result, texture, base, appearance, delivery, length, bottle, customer service, nails, glow, condition, expectations, polish, oil, gift, strength, effect, finish, treatment, difference, care, protects, hold].

Review highlights

  • "I have beautiful nails again and a reliable semi-permanent nail polish that lasts and does not damage my nails." — Nathalie V.
  • "The best base in my opinion, the nails look great after removing polish, not damaged at all." — Joanna B.
  • "This nail strengthener is excellent can't believe my nails have improved so well." — June H.

Reviews

Produit de base top, efficace

"Produit de base top, efficace et efficiente. Texture parfaite, Séchage rapide et Application facile . Action rapide et efficace. Néanmoins, manque d'explication si possibilité d'application avec un autre soin."

— Albane D. (5/5)

Mes 9ngles sont visiblement plus

"Mes 9ngles sont visiblement plus sain. La pousse se fait plus régulière, les ongles sont progressivement plus résistant, moins cassant. Je trouve même la couleur naturelle de l'ongle moins terne, un rosé plus intense. La matrice des majeurs jusque là invisible, se dévoile également ."

— Laurence D. (5/5)

Excellent produit. La base SOS

"Excellent produit. La base SOS a fait des miracles sur mes ongles affaiblis par des traitements médicaux. J'ai retrouvé des ongles durs, lisses qui poussent très vite. Jamais déçue par les produits Manucurist."

— Emily D. (5/5)

Très utile à utiliser entre

"Très utile à utiliser entre 2 semaines de vernis green flash pour prendre soin de mes ongles. Très agréable à mettre avec un joli rendu."

— Claire M. (5/5)

Mi sta aiutando molto a

"Mi sta aiutando molto a rendere la mia unghia di nuovo forte dopo molti semipermanenti un pò aggressivo. Dopo un mese le sento molto più forti ed anche esteticamente più belle."

— marilu.minadeo@gmail.com ‎. (5/5)

J’adore l’odeur, j’adore le peler

"J’adore l’odeur, j’adore le peler le matin et surtout mes ongles sont resplendissants"

— de M. (5/5)

Très bonne base, seule ou

"Très bonne base, seule ou sous un vernis, elle a contribué a rendre mes ongles + forts. Elle sèche vite."

— kty.andriot@free.fr ‎. (5/5)

Très bonne base, elle aide

"Très bonne base, elle aide bien à réparer / durcir des ongles abîmés"

— Catherine G. (5/5)

Jolie effet tout en transparence

"Jolie effet tout en transparence"

— Coralie M. (5/5)

La calidad de este producto

"La calidad de este producto para mejorar el aspecto y cuidar y proteger la uña es la mejor!!!el mejor producto de base que he conocido nunca"

— Piluca F. (5/5)

Q&A