Johnson's baby shampoo for years now. Why? Because it's gentle and I know it won't damage my brushes. But sometimes liquid soap can be a little too much of a waste of time as well, I feel like I'm someone who will use too much product so whenever I'm trying to clean out the soap it can take me up to five minutes on only one brush. When I was walking around in Sephora I noticed their solid brush cleanser and decided to give it a try. I'm not sure why I decided to go for the Sephora collection instead of the beauty blender cleanser but let's just say that I finally got to try both out.