I'll be honest, guys wearing make up was always a huge turn off for me. My current boyfriend wears make up sometimes, and yet he still looks cute. Can't explain it.
I think Tom Ford is actually coming out with foundation/concealer for men now,
Sleek masculine packaging.
I'll be okay with a man covering blemishes..
As long it's no lipgloss/eyeliner/mascara and ****.
Each to their own but I personally don't find it attractive. I'm a girl and I wouldn't really want my boyfriend to wear as much make up as I do... but something light to cover up blemishes like you said, I wouldn't mind