chemical from L'Oreal that encourages hair to enter growth phase  
        signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss  
        technique to create small wounds in skin to activate collagen production and hair growth  
        JAK inhibitor that reduces inflammation and immune attacks on hair follicles, leading to potential hair regrowth, especially in alopecia areata cases  
        mTOR regulator and immunosuppressant used more recently for anti-aging and hair regrowth