
Nail Strengthening Serum
- Regular price
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15 € - Regular price
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- Sale price
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15 €
Nail Strengthening Serum
- Regular price
-
15 € - Regular price
-
- Sale price
-
15 €
- Play video
The miracle hardening care that instantly strengthens and helps regenerate soft or damaged-looking nails.
Highly concentrated in plant-based keratin, silicon and biotin, this biomimetic formula helps densify the nail plate.
Its fluid texture is instantly absorbed by the nail for deep, targeted action.
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Free shipping on +39€ orders
Payment in 3 interest free installments (over 80€ orders)
Description
10% concentrated care formula
- Plant-based Keratin: intensely nourishes fragile nails
- AHA & Gluconolactone: gently exfoliate the nail plate
- Silicon: helps strengthen the nail
- Biotin (Vitamin B8): helps harden and fortify the nail
- Vitamin C: protects the nail from external aggressions
Proven visible results
- 85% find their nails harder*
- 81% find their nails stronger*
- 81% find their nails were less likely to split*
Easy and fast application
The alcohol-based fluid texture is instantly absorbed, leaving the nail with no greasy or sticky finish.
Composed of 97,5% natural origin ingredients.**
*Clinical test conducted under dermatological supervision on 25 individuals after two weeks of use.
**Calculation based on the international ISO 16128 standards.
How to use the Nail Strengthening Serum?
Your intensive repair care for soft or damaged-looking nails:
- Apply 1 to 3 times a day on bare nails using the brush.
- Let it dry completely until full absorption.
- Repeat daily, for 5 to 7 days.
If you wish to apply polish after this care, degrease the nail surface for optimum hold.
💅 Pro tip
For very soft or damaged nails, use as an intensive treatment: apply 3 times a day for 7 days.
Ingredients / INCI
Super ingredients
INCI list
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
97,5% Natural Ingredients*
*Calculation based on the international ISO 16128 standards.









Miracle treatment: hardens and regenerates
Boosts keratin
productionRedensifies the
nail plateFluid texture that’s
instantly absorbed
How to use Keratin Booster?
Perfect for soft, damaged-looking nails
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Apply 3 times a day on bare nails
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Allow to dry fully for complete absorption
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Repeat the routine for 1 week
FAQ
Our Frequently Asked Questions from our customers and community!
How long should I let the product dry?
The fluid texture is instantly absorbed by the nail. Simply let it air-dry for a few seconds, no rinsing needed.
Can I use the Keratin Booster several times a year?
Yes, you can repeat the care several times a year. It’s recommended to take a break between each care and monitor your nail’s condition over time.
Can I use the Keratin Booster with a base coat?
The Keratin Booster should be applied on bare nails only. If you wish to use a base coat, apply it after the care, once the nail has been cleansed.
Can I apply the Keratin Booster under Green™ or Green Flash™ Polish?
Yes, but it’s essential to cleanse the nail surface after the product has been absorbed to ensure optimal polish adhesion.
Our clients talk about us!
Our reviews are collected 2 weeks after any purchase and are the reviews of verified buyers only.
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Free delivery Free delivery in relay point from 39€ and at home from 49€ of purchase. Valid in Metropolitan France.
Free delivery
Free delivery in relay point from 39€ and at home from 49€ of purchase. Valid in Metropolitan France.
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Payment 3x free of charge
Or payment via credit card, Paypal, Amazon Pay, Apple Pay, Bancontact, iDEAL, SOFORT, Giropay.
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A question ? Please reach out to us by filling out this form.
A question ?
Please reach out to us by filling out this form.
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Loyalty program By becoming a Green Addict member, earn points and enjoy many exclusive benefits!
Loyalty program
By becoming a Green Addict member, earn points and enjoy many exclusive benefits!
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Click & Collect Your order is ready within 2 working hours in Paris from Tuesday to Saturday, from 12 p.m. to 7 p.m.
Click & Collect
Your order is ready within 2 working hours in Paris from Tuesday to Saturday, from 12 p.m. to 7 p.m.

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