Apply a generous amount of CHI Enviro American Smoothing Treatment Purity Shampoo to hair and work through evenly. Leave in 3 to 5 minutes. Rinse thoroughly. Proceed with the CHI Enviro American Smoothing Treatment service. Key Ingredients & Benefits: Eliminates up to 95% of frizz For colored and chemically treated hair Contains silk and pearl Perfect amount of silk to achieve smooth results Formaldehyde free