Natural hair growth: this shampoo cleanses the scalp to promote natural hair growth. For sensitive scalps: specially designed with moisturizing ingredients, the alpecin hybrid shampoo is gentle on dry, itchy scalps. Thicker, stronger hair: caffeine, zinc, and niacin work together in this men's shampoo to recharge your thinning hair for a thicker, stronger, fuller feel. Energize and recharge: with caffeine and castor oil, this shampoo recharges and energizes the strands for a fuller-looking head of hair. Fight for your hair: daily use of our alpecin shampoo helps promote natural hair growth and keeps your hair looking and feeling thick and full