WOW Science for the Skin Moroccan Argan Oil Shampoo has been designed with natural DHT blockers to restore smoothness, silkiness, and decrease hair loss in exceptionally dry hair. It contains Moroccan argan oil, which helps to hydrate and strengthen hair. This shampoo also includes saw palmetto and nettle leaf extracts, which have a natural DHT-blocking effect (DHT, or dihydrotestosterone, is a hormone that causes hair loss and balding) and can help to reverse hair loss and minimise hair fall. This shampoo contains vitamin B5, which helps to strengthen hair follicles and promote hair growth.