The Double-Effect shampoo from Alpecin combats both dandruff and hair loss at the same time. First, an intensive active compound of octopirox and salicylic acid ensures dandruff and excess sebum are throroughly washed away. These ingredients work together with piroctone olamine for a sustained anti-inflammatory and anti-microbial effect, thus preventing a new build-up of dandruff. Once the scalp has been effectively cleansed, the anti-hair loss effect gets to work in the same washing action. A stimulating caffeine complex penetrates the roots, specifically protecting against hair loss. This double-effect makes the shampoo a world first.