Think about it factually and you can come up with a logical educated guess.
Massaging the scalp does what..? Increases circulation and provides agitation via friction.
Have there been any studies or data collected on friction and hair growth? Yes. A study showed that men carrying heavy weights on their shoulders every day for years had slightly more hair growth on their shoulders than other men.
Has there been any clinical data on hair growth and increased circulation? Yes. temporary, minor fuzz has been shown to happen in some people via this method. This is why many snake oils use circulation enhancers in their products.
The next logical step in the intelligent consumers mind is then .... well will diong this be worth my time and effort? Will I grow healthy, strong hairs that last a long time?
A close look at the clinical data shows us that the answer to this is most likely no. The most you may get is some minor growth stimulation for a period of 6 months or so.
Will it hurt to try? Probably not at all. Heck, you may help "keep things running" for the *existing* hairs by gently, calmly massaging every day. Its really up to you.
This is how you should approach all questions like this, related to hair loss
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