Not only is it important to clean your brushes after every makeup application but it's only essential to give them a good shower once every now & then. Depending on how many applications you do in a week or a month, it's a good idea to shampoo them thoroughly after about 7-10 applications. I do that without fail only because I care for my clients & I believe in providing clean & hygienic services. It's my sincere advice to all makeup artists to look after the most important tools in your kit like your babies, clean them, nourish them & pamper them - this will not only make your life easy but will also save you a huge amount because then your brushes will last longer & will work better for you.
In a nutshell, cleaning brushes is important for maintaining good sanitary protocol , plus they will age beautifully & more smoothly ;)
I use these soap bars as they are gentle & mild on my brushes!
Circle the brush in the soap bar to create lather
Sweep it on your palm to get rid of all the product & then give it a good wash holding it downward
Use one of the brush dryers to hold them upside down for 360 degree air drying OR lay them out on a towel with the bristles pointing out of the slab or the counter so they are able to dry 360 degree