Review (3/5): A love hate relationship
I have used this many times now. I would purchase again, but in my opinion it is not the best for cleaning your brushes. I use mine more for the drying purpose. You will need to change the water basically after every brush and even after doing that you will notice makeup still on your brushes. So, I clean my brushes the "old fashion way" with the little silicone disk but then use this to spin dry. Have no issues with it ruining brushes.
You will need to use it several times before you get the hang of it. You need to make sure the brush is in just right or it will fall off or not spin correctly. Again, I have a love hate relationship with this.