Synthetic brushes are usually made from nylon or polyester. The key to taking care of synthetic brushes is being careful with them.
The less "abuse" you put them through, the easier it is to clean them.
Follow these steps for brush care
1.Don't use brushes to mix paints.
2.Avoid dipping the brush so far into the paint that paint gets into the ferrule.
The ferrule is the metal part of the brush that the attaches the bristles to the handle.
3.After painting, inspect each brush for frayed and loose hairs. Carefully pull them out. Be gentle!
4.Purchase a brush soap or liquid brush cleaner. if you don't get any hand wash will do.
These will remove all dried paint from the bristles and the ferrule.
5.Donot leave your brushes in the painting water when you are not painting.
6.do. but do not use harsh detergent soaps which u use for your laundry. never use them for fine art brushes please.
7.Store your brushes, bristle side up, in a dust free location.

Thanks

Sheela Raj