Kerastase Genesis Serum

This serum from Kérastase fortifies weak hair prone to shedding by strengthening hair fibers and improving its natural barrier function.

• The description claims that it helps to reduce hair shedding after 6 weeks of use.
• The description claims an alleviating effect on frizz and discomfort after 3 weeks of use.
• The description claims to help maintain the natural protective barrier of the hair root.