A question for guys...

I got that question popping in my head the other day, because I was sitting in the food court of the part of town where the most Asians haunt, and I saw this guy who clearly had foundation on, and obviously it didn't suit his skin type/colour, and the infamous (bubble)teashop chain in town where girls at the counter wears outrageous makeup (with some cases where they have no idea where to put their fake lashes). Because I actually weighing the option of a career path as a makeup artist, and some of the most famous youtube gurus get pelted with comments like "teaching girls to be vain" kinda stuff. So I wondered what guys actually think about it. I have gone out with a guy who thought makeup is essential, whereas my current BF don't mind as long as I am happy with how I look. I am asking you guys these question which leads on the definition of vanity, because I am actually curious as to what people think vanity is, especially with guys.

So, from what I gathered so far...
1. So far in the discussion, I find that most guys think that makeup on everyday basis is too much?
2. It's not so wrong to use skincare products if you are a guy, maybe, if its just for acne and maybe moisturiser/aftershave?
3. Clown/kabuki-like makeup is a nono
4. some guys think it's because it suggests that girls are not confident about their looks.

Sound about right? Keep coming with the vanity part please!