How do I use Power Shampoo? Ben December 17, 2021 14:57 Updated Wet hair. Massage gently into your scalp for at least 1 minute daily. Rinse thoroughly. Related articles How does Power Shampoo work? Can I take the Daily Multivitamin with other supplements? How long does it take to see results with Minoxidil? What is the Power Shampoo? What is DHT? Comments 0 comments Article is closed for comments.