I find Silicoil in art supply stores. You buy the liquid along with a glass jar with a lid. The glass jar has a coil on the botton that is verrrrry kind to brushes and gets them clean. Be sure to swish your brushes in turps to get the Silicoil off before you begin to paint.
Brushes don't last very long with me. I simply wear them out on each painting I do. Sometimes I start with a #4 round sable and it becomes a #00 by the time I finish! I don't use soap and water any more....I don't think it is necessary with the Silicoil cleaner. I have a lot of old wornout, spent and sprung brushes around that I use for various things...like mini-blender brushes.
Also, when I did use soap and water, I used shampoo instead of brush soap....after all, it is hair that you are washing. (No conditioner of course
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