Hopefully, your mother made you wash your face before bed, and that stuck with you all these years later! That's a good thing.
Here are the top three things to do for your skin before bed.
You need to remove the makeup, dirt and environmental free radicals (like pollution) your skin has been exposed to throughout the day. Failing to do so can increase breakouts (yes, even at your age!) from the bacteria collected throughout the day. Leaving on old makeup can clog pores (making washing the face for oily and acne-prone skin especially important) and hold free radicals (molecules known to cause oxidative damage to the skin) on your face, which can break down collagen and cause wrinkles. So reach for your favorite gentle cleanser and wash that face.
Treating the skin, usually accomplished by serums is the most important part of a skincare routine. Nighttime is the perfect time to apply a specialized serum or sleeping mask meant to rejuvenate your skin. There is a range of serums and masks available that focus on building collagen, evening skin tone and unclogging pores. During the night, there is less defense work (UV control, environment, etc.) for your skin to do, so restorative products applied during this time can work better. Look for treatments that boost your daily routine or work on specific concerns you have.
Dry skin becomes a more significant issue as we age. Make a rule to never go to bed without putting a moisturizer on your face. This may be in addition to the treatment you use or stand-alone. Also, drink a glass of water before bed. It's an easy addition to any routine, and hydration for skin needs to come from both topical and internal sources. Hydration is one of the keys to youthful skin at any age.