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.Haircare made for men Dandruff and hair loss are two of the most common scalp complaints for men Around a third of men suffer from dandruff. Hair loss is even more common. A good 50% of all men have a genetic predisposition for premature hair loss due to overproduction of testosterone. The hair roots are very sensitive to the hormone and atrophy over time. Hair loss is the result. The shampoo from Alpecin works against this tendency by introducing highly concentrated caffeine directly into the roots. After only 120 seconds, the active agent has already reached its goal and builds there a 24 hour depot. So for optimal effect, the Double-Effect shampoo should therefore be massaged into the scalp for two minutes before being rinsed out thoroughly.