research Effect of Natural Plant Extracts on Hair Loss Prevent in People with Alopecia 3 citations , December 2015 in “Asian journal of dermatology” Natural plant extracts with sweet flag can significantly reduce hair loss and increase hair density and thickness in people with alopecia.
research Action Mechanism of Natural Plant Extracts for Hair Loss Prevention and Hair Growth Promotion in C57BL/6 Mice 3 citations , July 2015 in “International journal of pharmacology” Natural plant extracts help prevent hair loss and promote hair growth.