If you use the same dirty make-up brushes day after day, there is no point in following a great skin care routine. Brushes should be cleaned everyday. If you can’t manage that, it’s absolutely a must to clean them at least once a week. The easiest way to do this is with a brush cleanser.
Make-up brushes contain bacteria and oil that accumulates after each use. This aids in the spread of acne and possibly even other skin disorders, like a fungus.
Besides, make-up brushes can be quite expensive. Taking care of them is a good investment for your skin and your wallet.