Skip to content
FREE SHIPPING OVER €100 · SECURE PAYMENTS · 14-DAY RETURNS

Nail serum for strength, growth and repairKeratin Booster Nail Serum

Soft, splitting or brittle nails after gel, acrylic or simply everyday life? Keratin Booster is an intensive nail serum that restores strength, density and resilience. Its highly concentrated formula with plant keratin, biotin, silicon and vitamin C specifically strengthens the nail plate, helps reduce splitting and supports healthier growth. The light alcohol-based texture absorbs quickly, does not feel sticky and leaves no greasy film—so you can use it during the day whenever you remember. It is also made with 97.5% natural ingredients, dermatologically tested and suitable for young people from 12 years of age.

What Keratin Booster does:

  • Strengthens and restores weakened nails
  • Helps prevent breaking and splitting
  • Gives nails greater density and resilience
  • Dries quickly and is also ideal for nails after gel or acrylic

Contents - 15 ml

€15.50

VAT included · Free shipping on larger orders

In Stock· Ships in 24 h
Quantity

Key benefits

Strengthens and restores weakened nails

Helps prevent breaking and splitting

Gives nails greater density and resilience

Dries quickly and is also ideal for nails after gel or acrylic

Description

Manucurist Paris - Keratin Booster – Nail Serum for Strength, Growth and Repair

Keratin Booster is a quick rescue for nails that have lost strength and started to split or break. A blend of plant keratin, biotin and vitamin C helps nails regain resilience, a smoother surface and a healthier appearance within just a few days of regular use. It dries quickly, leaves no sticky film and is also ideal as a restorative reset after gel or acrylic.

Composition

Why it works: active ingredients

Plant keratin – strengthens brittle nails and improves their structure
Biotin (vitamin B8) – supports nail growth and resilience
Silicon – contributes to the strength and reinforcement of the nail plate
Vitamin C – an antioxidant that protects against external influences
Glycolic acid + gluconolactone – gently renew the surface and help create a smoother appearance

Detail

Directions:

Apply 1–3× daily to clean, polish-free nails using the brush. Allow to dry completely.
Use every day for 5–7 days. Before applying nail polish, we recommend degreasing the nail for better adhesion.

TIP: For very soft or damaged nails, use as an intensive treatment 3× daily for 7 days.

Detail

Ingredients

INCI ingredients:
Alcohol denat, Aqua (water), Glycolic acid, Polyacrylate crosspolymer-6, Parfum (fragrance), Phaeodactylum tricornutum extract, Gluconolactone, Dimethyl sulfone, Prunus armeniaca kernel oil, Pentylene glycol, Isopropyl alcohol, Acetyl cysteine, Lens esculenta (lentil) seed extract, Hydrolyzed cicer seed extract, Chenopodium quinoa seed extract, Magnesium ascorbyl phosphate, Biotin, Tetramethyl acetyloctahydronaphthalenes

Contents: 15 ml
Suitable for: weakened, splitting and soft nails, and nails after gel or acrylic
Dermatologically tested | 97.5% natural ingredients

Safety

Manufacturer and safety information

Manufacturer

Manucurist SAS

19 rue d'Enghien, 75010 Paříž, Francie

hello@manucurist.com
Certification & Values

100% Natural

No parabens or sulfates

Cruelty-free

Never tested on animals

Certified

Organic & bio certificates

Sustainable

Eco-friendly packaging

The values we select our range by. Specific certifications can vary per product — see the product description.

Reviews

Customer experiences

Real customer experiences help describe the texture, scent and long-term feel of the product. Reviews are shown in their original wording.

How we verify reviews

Any customer signed in to their account can write a review; customers without an account can write one via a link we send to the email address of a delivered order. A review that our system links to a delivered order of this product is marked as “Verified purchase”; other reviews do not carry this label. Some reviews marked as “Verified purchase” come from our previous online shop (until 27 August 2026), where likewise only customers who had made a purchase could write a review; we no longer have them matched to a specific order. We check every review against our content rules before publishing it, usually within 24 hours; a positive or negative rating is never a reason for rejection.

How we handle reviews

No reviews yet

Bought this product? Be the first to help others choose.

Recommended

You Might Also Like