I derive immense pleasure from seeing my makeup brushes post-wash.
I use baby shampoo, sometimes together with the very-effective Daiso sponge cleanser, to thoroughly wash both my work and personal brushes. I like to use these liquids with the Ikea Galej tealight holders – they are a good size for most makeup brushes. Washing brushes can be time-consuming but seeing product wash out is quite a delight. In between washes, I use MAC Brush Cleanser or wipe off excess powder on a microfibre cloth.