I use this daily with mineral powder formulations whilst on the on go. The short brush is excellent for applying concealer around the eyes and the long brush is great for buffing the application and concealing larger areas on my face. 

I feel terribly disappointed with the brush. The smaller side is stiff and works like a spatula. The other side is OK, but nothing special, with stray hairs despite being brand new. I bought it because it was retractable! The only luxury thing in this brush is the packaging.

Rotated use with beauty blender & Chanel foundation brush - No problems, good application. Sadly when I tried to GENTLY clean ( with mild soap ) the hair started falling out from brush :( Really disappointed.

Beautiful looking brush. The powder end for blusher is fantastic - really soft and great quality. Found the foundation side not suitable for applying liquid foundation rather better for concealer or under eyes. Useful for traveling but will stick to my usual foundation brush.