Metformin, usually used for diabetes, can also help treat hair loss from alopecia areata due to its ability to reduce inflammation and stimulate new hair growth.
RT1640, a combination of cyclosporin A, minoxidil, and RT175, is discussed as a potential treatment for hair regrowth and repigmentation. The unique formulation aims to enhance hair follicle growth and restore hair pigment without the negative side effects of immunosuppressants.