alpecin double effect caffeine shampoo is designed to solve two common hair problems: dandruff and hair loss. first it works to gently exfoliate the scalp, removing dandruff and relieving itchiness. then its caffeine complex helps strengthen the hair roots, counteracting hair loss and producing stronger, thicker hair. alpecin double effect caffeine shampoo has an anti-inflammatory action to soothe the scalp, as well as antimicrobial properties and an antioxidant effect for increasingly resistant hair. the result of more than eighty years of hair care research, alpecin double effect caffeine shampoo also contains zinc and niacinamide for healthy hair roots, and is free from any softening silicones. alpecin double effect caffeine shampoo can be used every day. just massage into the scalp and leave on for two minutes before rinsing thoroughly. for more details, please read the instructions on the bottle. competitive athletes please note: alpecin caffeine can be detected in hair follicles.,removes dandruff ,relieves itchy scalp ,strengthens and thickens hair