I do believe parasites have a role in losing hair as well as genetics. It takes a long time to reverse hair loss but it is doable. I tried just about everything for topical purposes for hair loss because I was getting the chrome dome look and didn't want that I had ordered your p/w scalp oil a while back with other lotions and potions but It wasn't until I got a derma roller and then used the scalp oil that I started getting real results. It took about a year of dedication to start getting thick hair growth on the top of my head. The derma roller I think roughens up and loosens the scalp and the oil can then penetrate deeper.