R.J.
I only need foundation up here in the north. My complexion is a fright. Stick me in some sun, though (real sun, pointing downward, or mostly...refelcted off snow or water is just fine as well) and my skin evens out and glows. My skin just isn't designed for all this constant cloud cover. Blotchy, pallid, sickly. Rings under my eyes.
My SISTER otoh has porcelain skin. Her skin looks best OUT of the sun. So I wear foundation up here, she wears foundation in sunny climates.
I always wear mascara, and usually wear liner.