It seems that in all isekai businesses its always makeup that makes the most money lol

not just that.In reality too, the cosmetic business is incredibly profitable. Else why would beauty companies not want you to know that its actually better to put less stuff on your face? Its also why people in ads are photoshopped~

Money of females are the best to earn y'know~

Plus nowadays, you would be surprised of the number of increasing men using cosmetic too!
Profitable indeed