This ultra-light volumizing shampoo for fine hair is clinically proven to strengthen, repair, and prevent future damage from everyday elements, styling, or salon services.* The best shampoo for fine hair has to repair as it volumizes. No.4FINE gently removes buildup to leave hair clean and soft with lasting volume, body, and bounce – never weighed down or dried out.

The No.4FINE & No.5FINE System features an ultra-light, clinically proven shampoo and conditioner to instantly build volume, strength, and body for clients with fine hair. The #1 prestige shampoo and conditioner** in new fine hair formulas.