The BIO-FLEX Detangling Hair Brush (Leaf Shape /Lavender Finish), Our patented new BIO-FLEX is an incredible break-through with a handle made from 100% cornstarch! With a unique fluid design and flexible pins, the BIO-FLEX is perfect for wet or dry detangling It pairs beautifully with other Bass Pet Brushes. It's durable and will function optimally for years, but when it's finally discarded, the handle organically breaks down to create a natural fertilizer.