Sildenafil (Viagra) shows potential for hair growth by enhancing dermal papilla cell proliferation and stimulating perifollicular vessel formation. Users discuss the possibility of using Cialis (tadalafil) similarly, noting its benefits and side effects.
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.