
The Story
🗒 Description
A dual-action, pre-shampoo concentrate designed to decalcify and repair damaged hair. It uses citric acid to remove calcium build-up from hard water and glycine to strengthen and reconnect keratin bonds — leaving hair smoother, shinier, and up to 99% restored in strength.
🌿 Key Ingredients
- Citric acid (3–8%) – Penetrates core and surface to remove excess calcium and neutralize dullness and stiffness.
- Glycine (5%) – An amino acid that deeply repairs and reinforces inner hair structure after decalcifying.
- Transparent gel texture – Allows multi-layering (shampoo on top) without rinsing for optimized repair and efficiency.
🧴 How to Use
- Step 1: After shampooing, apply the Kérastase hair mask for damaged hair to wet hair.
- Step 2: Massage gently through lengths and ends.
- Step 3: Leave it on for five minutes and rinse well with lukewarm water.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
🗒 Description
A dual-action, pre-shampoo concentrate designed to decalcify and repair damaged hair. It uses citric acid to remove calcium build-up from hard water and glycine to strengthen and reconnect keratin bonds — leaving hair smoother, shinier, and up to 99% restored in strength.
🌿 Key Ingredients
- Citric acid (3–8%) – Penetrates core and surface to remove excess calcium and neutralize dullness and stiffness.
- Glycine (5%) – An amino acid that deeply repairs and reinforces inner hair structure after decalcifying.
- Transparent gel texture – Allows multi-layering (shampoo on top) without rinsing for optimized repair and efficiency.
🧴 How to Use
- Step 1: After shampooing, apply the Kérastase hair mask for damaged hair to wet hair.
- Step 2: Massage gently through lengths and ends.
- Step 3: Leave it on for five minutes and rinse well with lukewarm water.












