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 What are the ingredients in Power Shampoo? How does Power Shampoo work? What is Power Shampoo? What are the side effects of Tadalafil? Where is my order? Comments 0 comments Article is closed for comments.