Duo Day & Night
- Regular price
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25 € - Regular price
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30 € - Sale price
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25 €
Duo Day & Night
- Regular price
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25 € - Regular price
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30 € - Sale price
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25 €
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The day & night routine for soft and damaged-looking nails, an express care to strengthen and regenerate. This routine includes:
- The Keratin Booster, a 10% concentrated care to instantly help repair fragile nails
- The S.O.S. Mask, an overnight care to intensely hydrate nails
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Nail Strengthening Serum

- Regular price
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15 € - Regular price
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- Sale price
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15 €
Strengthens and regenerates soft, damaged nailsStrengthens -
S.O.S. Mask

- Regular price
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15 € - Regular price
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- Sale price
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15 €
Regenerating and moisturising night maskRégénère
Description
The day & night routine
7 days to visibly repair soft and damaged-looking nails, with the combined action of two expert care
Day care - The Keratin booster:
The miracle hardening care that instantly strengthens and regenerates soft and damaged-looking nails.
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*
Its fluid texture is instantly absorbed, leaving the nail with no greasy or sticky finish.
*Clinical test conducted under dermatological supervision on 25 individuals after two weeks of use.
Night care - The S.O.S. Mask:
The overnight mask intensely hydrates very damaged-looking nails. Its unique formula, highly concentrated in emollient and fortifying agents, forms a protective film on the nail surface to boost cell repair.
Proven visible results:
- 80% find their nails more hydrated**
- 75% find their nails harder**
- 75% find their nails stronger**
**Test conducted on a panel of 20 people over 14 days.
How to use the Day & Night Routine?
Your 7-day care, to repair soft and damaged-looking nails:
- Day care: On bare nails, apply the Keratin Booster 1 to 3 times a day using the brush. Let it dry until fully absorbed.
- Night care: On bare nails, apply the S.O.S. Mask 2 to 3 nights a week in a thick layer. Let it dry. The next morning, remove it by peeling it off or washing with soapy water.
Ingredients / INCI
Keratin Booster :
ALCOHOL DENAT., AQUA (WATER), PRUNUS ARMENIACA (APRICOT) KERNEL OIL, DIMETHYL SULFONE, PARFUM (FRAGRANCE), GLYCOLIC ACID, POLYACRYLATE CROSSPOLYMER-6, PHAEODACTYLUM TRICORNUTUM EXTRACT, HYDROLYZED CICER SEED EXTRACT, CHENOPODIUM QUINOA SEED EXTRACT, LENS ESCULENTA (LENTIL) SEED EXTRACT, PENTYLENE GLYCOL, GLUCONOLACTONE, ISOPROPYL ALCOHOL, ACETYL CYSTEINE, MAGNESIUM ASCORBYL PHOSPHATE, BIOTIN
96,5% Natural Ingredients*
S.O.S. Mask:
AQUA (WATER), ALCOHOL DENAT., POLYVINYL ALCOHOL, PANTHENOL, PARFUM (FRAGRANCE), ALCOHOL, TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE, CI 14700 (RED 4)
80,5% Natural Ingredients*
*Calculation based on the international ISO 16128 standards.
💅 Pro tip
To complete the routine, nourish the cuticles daily with the Nourishing nail pen.








Day & night routine for soft, damaged-looking nails
Strengthens and
regeneratesRepairs fragile
nailsIntensely hydrates
the nail plate
How to use the Day & Night Routine?
Ideal for weak and damaged nails
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Apply the Keratin booster 3 times a day
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Apply the S.O.S. Mask in the evening every 3 days
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Peel off the mask the next morning
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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A question ?
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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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