How do I use Power Shampoo? Karina June 19, 2019 10:09 Updated Follow Wet hair. Massage gently into your scalp for at least 1 minute daily. Rinse thoroughly. Related articles How does Power Shampoo work? What are the ingredients in Power Shampoo? What are the side effects of Tadalafil? Promo Codes What type of medicine do you prescribe for hair loss? Comments 0 comments Article is closed for comments.