This brush is particularly suitable for the Peeling Mask & Clay Mask. The brush makes it easy to spread the mask evenly over the face & you will notice that you need much less product; it will not only help you save product, it is also more hygienic to use. The brush is made up of synthetic hair strands, which are the most allergy-friendly. Ecooking is a cruelty-free brand; they do not test any of their products on animals. All products are natural, organic, paraben-free & vegan.