I have a few scars on my face from acne, so I always try to atleast dab some concealer ver those marks before leaving the house. I don't usually have a full face of make-up on unless I am going out to a place where the light will allow someone to see all my little imperfections, like a restaraunt or social gathering, but a dark club is a different story.
My main products I try to wear when I don't feel like going out with a lot of make up are concealer, mascara, tinted lipgloss, and maybe a little highlighter under my eyebrows to show the shape.