How often you change your makeup brushes?

I was curious how often to change others of their makeup brushes. I was with the makeup clinic for several years, but lately I seem to have some kind of allergic reaction to the skin (especially in the cheeks). I do not think the composition of his since I've never had a problem with it before. I think it might be my makeup brushes (for example, blush and powder brush). Then the brushes, if not changed often causes a reaction? For example, the accumulation of too much on the brush. Thank you.

Clean with shampoo baby once a month. About every 3 months, use a cleanser to disinfect the brush, which also (A MAC, Sephora in May, which also do). Pour a little cleaner or shampoo in his hand. Swirl the brush around the benefits for a few moments. Rinse. If it still looks dirty water or dirty, then do it again until the water is clean. Smooth silk and placed in an overnight papertowel. Voila!

Smokey Eyes for Christmas Party- make up tutorial

Make-up application Photo Mugs MODEL RELEASED. Make-up application. Woman applying make-up powder to her cheek with a brush.....

Make-up application Photo Mugs MODEL RELEASED. Make-up application. Womanapplying pink blusher powder to her cheek.....

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