Serum anti-chute fortifiant is a daily anti-hair fall fortifying serum for weakened hair, prone to thinning. It improves resistance to minimize hair fall, reinforces, refreshes, soothes and helps to preserve the scalp's skin barrier. In addition, this serum helps to reduce the rate of hair fall after 6 weeks. Genesis Homme Serum anti hair-fall by Kerastase is a daily anti-hair fall fortifying serum for weakened hair, prone to thinning. Enriched with our AMINEXIL ingredient, it helps reducing hair-fall in 6 weeks. Clinically proven to help reduce the rate of hair fall after 6 weeks* Significant soothing effect with decrease in total itchiness and discomfort after 3 weeks of use* Use once daily in the morning or before going to bed during a 6-week period. Apply 4 doses on dry or towel-dried scalp, section by section. 1 dose= 1 pipette until the mark. Do not rinse.