Hair, rejuvenated. In many cases, hair loss can be prevented by using products that stimulate the scalp’s metabolism. That’s what Derma Activate Shampoo does for you. Vitamin H improves the quality of the keratin inside your hair, which are like building blocks. Stronger keratin means stronger hair that’s less likely to fall out. Keep using Derma Activate Shampoo and with time, your hair will be thicker, more voluminous and your scalp will function better.