Let me introduce you to the Make Up Store Brush cleansing soap, a gentle soap that will clean deeply your brushes and not damage the hair.
In fact, I am so happy with this soap that this is the second soap that I have bought. The soap contains 120 g and costs 16€, and in my case lasted over a year. The soap comes inside a plastic box, which I think is a wonderful idea as it is the perfect way of storing it between uses.
The soap is formulated with common cleansing agents and several oils and conditioning agents. It does contain parfum, but it is a very clean smell and not overpowering. What I think is important is that it does not contain alcohol, which is a drying agent.
The method I use to wash my brushes is very simple: dampen your brush under the tap, swirl the hairs onto soap. Once the hairs are coated in soap suds, gently swirl them in your palm and rinse under the tap until clean.
How do you clean your brushes? What type of product do you use?