Does sleeping with makeup age your skin?

Doffy asks…People always claim that sleeping with makeup is damaging to the skin. They say it ages the skin faster, but they never explain why. So I’m curious as to what happens to our skin at night, since it suddenly can’t handle the makeup anymore (which has already been there for hours during the day!)

The Beauty Brains respond: 

We’ve never seen any data showing that makeup makes skin age faster but there are a few potential negative consequences of leaving makeup on all night.

3 reasons NOT to sleep with makeup on

1. It might get into your eyes and irritate them.
2. Prolonged contact, especially if your pillowcase occludes the makeup against your skin, can lead to increased irritation.
3. If the ingredients are prone to be comedogenic presumably leaving them on the skin over night could increase the likelihood of blackheads.