I know people who have worn day old makeup. Gross. I cannot imagine sleeping in it and then keeping it on for another full day. By the time I get home at the end of the day / evening my eye makeup is driving me crazy and I need to wash it off ASAP.
I really dislike washing my face at the sink though as I detest the feel of water dripping down my arms (could never be a surgeon) so take baths each night and wash my face in the tub.
according to paris hilton it makes her skin amazing..
No matter what...I always wash my face before I go to bed. ALWAYS!
I only ever sleep with my makeup on if i've had too much to drink
And all that ever happened was I go a few pimples.