Does non spf foundation protect your skin from uv rays? I read an article (many moons ago) that suggested that make up can offer an spf of about 2 even when it isn't formulated with spf ingredients. I'm inclined to believe this because lots of my friends who don't use sunscreen but apply full make up everyday have faces that are much paler than their bodies. I've tried to research this online but haven't been able to come up with any information. Do any of you ladies have any theories on this or have a link to a website that contains information about it? Thanks!