9.5.2 Hair growth products
Common polymers in traditional hair growth formulations include algae polysaccharides，mucopolysaccharides，dextran-40 and so on，generally acting as nutrients to assist hair growth.In recent years，attempts have been made to load some drugs，such as 5α reductase inhibitors，and even traditional Chinese medicine into nanocapsules，targeting hair follicles，for example，the natural polymer chitosan coated dutasteride nanocapsules.(https://www.daowen.com)
