The discovery of reactivating stem cells in hair follicles led to new medication in men and women with baldness and alopecia issues. Hair follicles stem cells are simply old cells found within the hair. Loss of hair is due to significant factors such as hormonal imbalance, chemotherapy, stress, and aging. During the quiescence, stem cell hair follicles remain idle until the new hair cycle regrowth resumes. If the stem cells in these areas remain inactive, the scalp will start to lose hair.