Saw Palmetto inhibits the action of the enzyme 5-alpha-reductase which is found in the scalp tissue and involved in the formation of the hormone DHT. It inhibits the production of DHT, held to be a root cause of hair loss Contains no salt, sugar, yeast, gluten, wheat, lactose, dairy products, flavourings or preservatives *Suitable for women, though not to be taken during pregnancy or when breastfeeding