Heavy duty finasteride that comes with higher risks, but scalp injections seem safe and are gaining popularity  
        technique to create small wounds in skin to activate collagen production and hair growth  
        growth factors taken from your blood and injected into your scalp to stimulate hair  
        natural substance from Neem tree with medicinal and pesticidal properties  
        signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss