Brush Cleaning Information

I use MAC brush cleanser. You just need to dilute it with hot water at a 2:1 ratio, wipe off the moisture after use, and let it dry. It's convenient because you don't need to rinse with water. I personally wash powder brushes every three days and foundation or liquid brushes every day, but if you use them alone, you don't need to go to that extent. Normally, you can just spray alcohol on a paper towel and wipe them gently, but I think it's best to wash things like foundation brushes at least once every five days.

(Source: Makeup Artist myu)