HOW DOES IT WORK: Advanced formula helps repair, strengthen and protect hair while optimizing hair growth. Helps to minimize the amount of hair lost each day. The result' Hair appears thicker, fuller and healthier. HOW/WHEN TO USE: Wet hair. Massage a small amount of Root Power Restorative Shampoo into scalp and work through from roots to ends until you feel a cool, tingling sensation. Rinse and towel dry.