This high-performance biotin-infused shampoo adds strength and smoothness to weak hair increasing the diameter of individual strands for maximum volume. Regular use makes hair healthy, thick and full. Biotin prevents breakage and encourages hair growth. Pro-vitamin b5 adds shine. Aloe Vera is soothing and calming, while cucumber extract adds moisture. Apply liberal amounts daily and follow with Osensia O So Thick & Strong Conditioner. Paraben and sulfate-free.