The Vichy DERCOS Aminexil Clinical REGEN Booster is a dual-action scalp serum: This hair-renewing serum stimulates the growth of up to 14,000 hairs in 12 weeks*. In addition, the booster stimulates the growth of existing hairs. This is thanks to its advanced anti-hair loss technology with 1.5% Aminexil. Aminexil inhibits the hardening of collagen tissue, keeping the hair follicle flexible and better supplied with blood, thus keeping the hair in the growth phase longer. Niacinamide and ginger strengthen the hair follicles and promote scalp circulation. Application Divide the hair into 4 equal sections. Apply one dose of the scalp serum evenly to each section, ensuring the entire scalp is coated. One dose corresponds to filling the pipette to the mark. Gently massage the Vichy booster into your scalp with your fingertips to distribute the product evenly. Do not rinse. Apply the scalp serum 5 to 7 times per week for a period of 12 weeks. Can be used on wet or dry scalp. For external use only. Do not swallow. In case of eye contact, rinse immediately and thoroughly. * Clinical trial on 40 women and 37 men with at least 5 applications per week over 12 weeks.