heals the scalps. i have oily scalp and dandruff hair before but not anymore. I use their shampoo for dandruff twice a week and amino shampoo everyday or every other day. I was losing some hair before using the amino shampoo but after using before my whole bottle finished i see results of some tiny hairs growing at those spots that i have lost hairs and makes my hair harder to fall. A++ for this shampoo.