I've started wearing makeup more often over the past year, and boy has it been a learning experience.
One of the biggest things I've learned is that it's a really good idea to clean your makeup brushes every few weeks. Makeup brushes can get clogged with excess powder or oils from your skin and can even cause breakouts if not washed often enough.
At first I wasn't sure how to clean my makeup brushes, but after a little trial and error I found a good drugstore cleanser for them. I tried more expensive cleaners and some alcohol-based sprays, but face wash eventually won out!