You make a mess of your sheets
When you wear your makeup to bed, you're actually spreading the problem. Not only are you causing dry skin and wrinkles, but you're leaving behind makeup residue on your bed. This is a nasty cycle because on nights when you do clean your skin, you'll be resting it on bacteria filled, makeup covered, pillows and sheets. Think of it like walking the streets of New York barefoot and then crawling into bed. Ick! Gross! Also, need not to say this can create stain on your favorite sheet. If you needed another reason to never break your routine of washing your face and removing makeup before bed, you just go it.
You get chapped lips
Chapped lips are the worst. They are painful. Plus, cracked, flaky lips are not the smoothe surface you look for when applying gloss or lipstick. So if you fall asleep with lipstick on, they suck out the moisture and lead to chapping.
Don't break with routine
Routines and regimens are critical for your skin's health and are in place for you to follow. Your face should be washed twice daily to remove oil, dead cell buildup and product that's mixed in with the oil and cells. During the days while you are out, your skin collects alot of dusts and bacteria from the air.
Eye makeup will also irritate eyes and clog the many oil glands around the lash line with particulate matter from product, pigments and mineral particles. Night time is the best time for retinoids — anti-wrinkle fighters that also help improve uneven skin pigment, fight clogged pores and acne too. Retinoids, like retinol, break down with light, so apply them before turning off the light for sleep. Create good habits, your skin will love you for it.