Lowers DHT (dihyroxytestosterone) improving hair growth and prostate health. Balances androgen and estrogen in the body. When applied over the scalp rosemary essential oil helps stimulate hair growth, slows graying, and can be used to treat dandruff and dry scalp. One of the best known natural ingredients for hair growth. I'm proves hair's ability to resist traction damage and hair shedding. Increase nerve growth factor healing nerve tissue. Supports recall, attention, & memory.