Dr. Wolff PLANTUR 39 PHYTO-CAFFEINE Leave-In TONIC 200ML For Hair over Forty Protects Hair roots, Strengthens Hair Growth Comprises caffeine, which actively blocks testosterone from weakening the hair roots. Also Comprises the vitamin niacin and zinc salts to improve hair growth. Furthermore, it Comprises bio-active ingredients, successfully used for hormone replacement therapy in menopausal women. Ideal if you select to not wash hair day-to-day with Plantur 39 Caffeine Shampoo. The alcohol within the tonic isn’t harmful to the scalp. It is very important for the short absorption of the formula directly to dry hair.