To avoid drying out your skin you should stay away from harsh chemicals and cleansers. Those cleansers with exfoliating beads can be bad, too. A gentle cleaner is all you need to wash away makeup and oil that has built up throughout the day. If you use other products with harsh chemicals, you run the risk of irritating your skin or drying it out, as they contain ingredients that can cause excessive drying or inflammation.
Avoid touching your face unnecessarily. If you pay close attention, you will notice that you put your hands to your face quite frequently throughout the day. This spreads germs and oils from everything you touch onto your face. Wash your hands and face often to clean off these oils and try your best to stop this bad habit.
It is extremely vital to practice proper hygiene during the course of the day. If you are dirty, take a shower when you get home and never go to sleep with dirt on your face. Also, if you are a girl, wash off your face and eye makeup every night when you get home from school or work.