Nourish and rejuvenate your hair with Dr. Berg Biotin Conditioner. Our new and improved formula has been clinically tested and is certified paraben-free, sulfate-free, silicone-free, cruelty-free, and safe for sensitive skin. Dr. Berg Biotin Conditioner is infused with premium biotin and botanicals to restore and hydrate hair while reducing frizz with every use—backed by our 30-day money-back guarantee!