Sulfate-Free Shampoo For Weak And Damaged Hair. Its Cleansing Formula Contains Gentle Surfactants That Respect The Hair’S Physiology And Maintains Its Color. Suitable For Keratin-Treated Hair. Contains Keratin And An Active Silk Protein Blend To Strengthen And Restructure The Shaft. The Hair Is Moisturized Thanks To Pro-Vitamin B5 And Aloe Vera, While Vitamin E Provides Antioxidant Activity.