I was really surprised by this brush. I really like using it for defining the outer corner of my eye with darker shadow. The bristles are synthetic but they pick up shadows very weell. The only thing that bothers me is that this is a mini sized brush - the handle is quite short. So it does not fit in my brush jar and I have to store it separately. But I manage to apply the shadows with it despite its size, so it does not have any effect on the usage.