I am curious, too.
I, myself, rarely wear any make up. I don't have a lot of it {can't find most of it}. I generally use a compact. To even out the skin tone {I hope}. If I feel like it, I'll use blush. Always chapstick {it does add shine}.
That's it. I wish I could get back into the swing of using make up. I know that it does help me {people} look better.
Even adding a nice pair of earrings or wearing a ring or other piece of jewelry, something small can make a difference.
I do feel a bit unfinished without it but I also feel inconspicuous and I really enjoy that.