How to clean the makeup brush
Here are a few reminders before you get started.
1) You want to use a mild soap of some kind—mild being important so it doesn't damage the fibers in your brushes and make them break down. I use my gentle face wash, personally. Baby shampoo is a common go-to. And, of course, there are special washes you can get (like this one from Ulta) that'll do the job well.
2) Try not to submerge the part where the bristles are attached to the wand in water—this can loosen the glue and cause shedding. You can run the tips under water to rinse them or dip them into a bowl filled with clean water to get most of the makeup off.
3) After dipping your brushes into soapy water, don't go crazy with the rubbing. Gently move it back and forth across your hand (or this genius little glove contraption) to help work the cleanser in between the bristles.
4) Post-rinse, lay them out flat on a lint-free towel (hint: a paper towel works well) and be on your way.