Genesis Serum Fortifiant Hair Serum

Professional-grade daily scalp serum that strengthens hair from the root to prevent breakage from brushing.

Salon-quality fortifying treatment for at-home use. Genesis Serum Fortifiant by Kérastase is a silicone-free scalp serum that targets hair weakness at the source. This lightweight, professional-strength formula penetrates the scalp to fortify hair, reduce breakage, and strengthen weak, thinning, or color-treated hair without residue or buildup.