Kérastase Première Concentré Décalcifiant Ultra-Réparateur Pre-Shampoo Bond Building Treatment

Severely damaged, color-stressed, or chemically processed hair

The bond-building reset. This pre-shampoo concentrate goes on dry hair, decalcifies hard-water minerals, and rebuilds broken bonds before your wash even starts. Damage repair, leveled up.

Key benefits:

• Bond rebuilding before shampoo
• Removes mineral buildup at the source
• Reduces breakage by up to 96%
• Once-weekly intensive

Hero ingredients: Citric Acid, Glycine, Maleic Acid

Best for: Severely damaged or processed hair — apply to dry hair pre-wash, leave 5 min, rinse and shampoo

✦ A Scalp Bar Favorite — The weekly intensive we recommend for severely processed or color-stressed hair.