Brush maintenance is not at all hard to incorporate into your daily life. While you're doing your makeup, give each brush a spritz of alcohol (or a spray brush cleaner) and wipe on a clean paper towel after each use. This prevents any extra bacteria from chilling in your brush, waiting to jump onto your face. It also helps get rid of color residue so that you can use the same brush for a different shade of blush or shadow, or whatever. If you apply makeup daily, I suggest you fully wash your brushes at least once a week. Of course, that changes depending on if you're doing different colors, different faces, or you go wild and apply makeup twice a day. For me, I wear makeup maybe two or three times a week. So I'm fine with washing at least once every two weeks. As always, your mileage may vary. If you look at your brush and see more color from product than bristles, you definitely should get to washing. There is also such a thing as being overzealous when it comes to washing your brushes. Fully washing your brush every day can lead to bristles shedding and becoming coarse. Getting into a good habit of washing your brushes regularly not only keeps things clean, but it also prolongs the life of your brushes. I still have some eye shadow brushes from when I was a junior in high school.
So now that I've given you a primer on brush care, let's get right on to how I clean my brushes.