1. The DoubleEffect Caffeine Shampoo loosens scaly keratinous cells and helps remove dandruff from the scalp. 2. With the scalp cleared of dandruff the caffeine complex can penetrate into the hair root and help strengthen it against hair loss.
Leave on the scalp for 2 minutes - from application to rinse.
Information for competitive athletes Alpecin caffeine can be detected in hair follicles.