Anonymous wrote:Pure mineral foundation can be worn overnight without harming your skin. If your skin tolerates Bare Minerals, then it' may be fine to leave it on overnight, although it will get your pillowcase dirty.
There are mineral foundation alternatives that are even better than Bare Minerals, if you want to feel totally comfortable with not washing it off overnight.
I get itchy after about 12 hours with it on, but it is the least offensive of the dozens of foundations I have tried. I actually will avoid wearing it most of the time, but once a month I get some hormone-caused acne.