Are you wearing the wrong foundation shade

Foundation isn't supposed to make you look as if you got a fresh tan.
After all, that's what bronzers are for. Instead, it's supposed
to create a perfect, smooth complexion and cover-up any imperfections.
This is why you should always use a foundation which blends in with your
skin. I recommend testing on your jawline (not your hand!) before
buying, and when possible, ask for a sample first. That way you can try
it at home -- and look at your skin in various lighting situations --
to make sure the shade you choose looks natural.