I use one of the brushes to mix the baby shampoo and oil up. The blend will turn an odd soft color when you blend it.
When I rub the brush softly against the side of the bowl. You will start to see the colors leaving the brush.
Run the brushes under warm water for one to two minutes. You can gently rub the fibers to ensure that they are perfectly clean.
When they seem to be clean I like to delicately rub a cloth with the brush to ensure that they are totally spotless. If you get any hints of shading, at that point wash them once more.
Let them dry on a fabric medium-term. Try to prepare, the bigger brushes can take 12-24 hours to dry. I love that this blend cleans the brush, however, that it shields the fibers from getting dry and broken.