Julvani Scalp Massagers are shaped perfectly to the curvature of your hand to feel comfortable to hold. Additionally, our scalp scrubbers are made with a wheat straw base that is 100% biodegradable, and a soft, non-toxic silicone insert that provides great scrubbing action while still being soft enough to not hurt your scalp. https://www.julvani.com/products/scalp-scrubberAll Rights Reserved