Now I've also looked at these in the shops . But... Aren't they all made from 'Human Hair'. The ones I saw were. For some reason using Human Hair creeps me out! Not quite sure how it got 'donated'!
I started with one too, tho different from yours, looked more like a paint brush. It worked quite well. I used it with KMF cream. My daughter has it now lol. I 'm more or less back now with an imitation badger from Omega. Works just fine, do not think I need another brush.