Blessed DHT Blocking Bio-Therapy Shampoo is a unique superior formula free of SLS, DEA, and Parabens which can be drying to the hair and known to cause hair and scalp irritations.  Blessed shampoo with 11 added DHT blockers is designed to gently cleanse the scalp while blocking DHT which has been found to be the primary cause of hair loss. This shampoo is also used along with a complete system of care to regrow and restore health and vitality to the follicle