How much caffeine does Phyto-Caffeine Shampoo contain?

The caffeine quantity is measured so that caffeine is available in the hair follicle for the whole day, thus preventing the effect of testosterone. Since the Phyto-Caffeine Shampoo is applied externally, the quantity of caffeine that gets into the body through the hair follicle is harmless, even for people who are sensitive to caffeine.