Anywayyyy, I washed some of my brushes today and I thought I'd share how I do it. Obviously washing make up brushes is really important, for one thing to get any colour off which you might not want to apply next time you use the brush, for another re-using unwashed brushes results in bacteria being transferred and causing break outs, which is never good.
I use Johnson's Baby Shampoo to wash my brushes, this is better than soap because it washes out easily not leaving any residue and keeps the brushes soft, whilst still cleaning them. I like to squirt a large blob out next to my tap at the sink, because it's too much hassle to pour out individual bits for each brush. Then I run a tap of lukewarm water slowly, so it's a constant flow, but not too strong. Then I just swirl each brush in the baby shampoo and rinse under the tap. If I'm washing eyeshadow brushes I have to do this a couple of times to get the colour out. For larger brushes I make sure the baby shampoo gets all over the brush instead of just swirling it in the shampoo, before rinsing.
Then once all the brushes are clean I lay them out on my windowsill, waiting for them to dry ^ - ^
|Nice clean shiny brushes ^ - ^|