Kérastase Resistance Masque Extentioniste Length Strengthening Hair Mask

Slow-growing, damaged lengths that need weekly rehab

The weekly length treatment. Masque Extentioniste deeply reinforces every inch — sealing split ends, dramatically reducing breakage, and leaving lengths detangled, supple, and visibly healthier.

Powered by Kérastase's length-repair complex:

• Gluco Peptide — rebuilds strength deep in the fiber
• Wheat Protein Derivative — reinforces fragile zones
• Native Plant Cells — revitalize tired lengths

Best for: 1-2x weekly, five minutes, in place of conditioner

✦ As Used at Scalp Bar — Applied under warm steam in our repair rituals — recreate it at home with a warm towel.