This duo is for any damaged hair in need of repair. In using the layering technique (applying the shampoo on top of the concentrate), you cover your hair with an extra dose of active ingredients to help remove calcium, increase shine and reduce breakage.

Kérastase's revolutionary Première Intensive Repairing Pre-Treatment is the first of its kind, specially formulated to remove excess calcium and effectively repair damaged hair. Pair with the Première Decalcifying & Repairing Hair Shampoo to acheive maximum results.

Benefits:

• Decalcify and significantly reduce persistent damage
• Eliminates calcium deposits
• Alleviate stiffness and lackluster appearance
• Reconnect broken links among keratin chains
• Recreates 99% of hair's original strength*
• 93% reduction in hair breakage*
• 75% more shine*
• 97% increase in hair's inner structure reinforcement**