I have sensitive skin. How long should I leave the Caffeine Shampoo on my scalp?
In principle, the Caffeine Shampoo C1 is well tolerated. Nevertheless, the longer you leave the shampoo on the scalp, the more intensive the effect of the caffeine. This, however, may increase the risk of scalp redness especially for sensitive scalps. Therefore, you should pay close attention to how your scalp reacts when you leave the product on longer. Normally, 2 minutes should be enough to stimulate the hair roots.