Why men spend so much money on hair treatment

[baldozer]

I just shave my head and wear a goatee and look very good like that and also feel confident. So what is up with men spending thousands of money on hair treatments. Not to mention the messing up of their bodies, because no pill is without any side effects and the long term effects of drugs like propecia is not even known as nobody has been on it for more than 15 years.