they are in inferiority complex, everytime they compare themselves with beautiful actresses and models so they think that they are more ugly instead she is will be more beautiful and pretty and you can also say that its in their nature or habit to buy these products. they use plenty of creams in summers, also in winters, instead of balancing their diet with particular vitamins and minerals...
another point is girls do like cosmetics more than boys prefer these stiffs........

Chinese girls again?! That's not Chinese girls prefer, u should say all girls.
I am a buyer, I buy stuff, u know what do I buy? Cosmetics. Where do I send them? Canada, USA, Kenya……
I guess they don't sale it there for Chinese girls to buy.

It's all about fashion. Western fashion is a trend, like we 'Merican find that Italian designers to be the best.