Hair loss is not caused by sclerosis of the scalp or excessive adherence of the scalp to the skull. Massages therefore have no effect on hair growth.
Massages are soothing and can help certain active ingredients to be absorbed. The kneading-rolling technique recommended by some people helps "detach" the scalp from the skull, but hair loss is not related to tightness or sclerosis of the scalp. This is why massages have no influence on hair loss.