The first biodegradable toothbrush is called Monte-Bianco Nature. Equipped with a replaceable head with natural bristles, the handle is made of Apinat, a 100% biodegradable material invented through a joint effort between Frisetta and A. Schulman and developed by API. The rheological qualities of the material make it easily processed at thicknesses up to 1 cm, while its crystallization properties make rapid cycle times possible. Outstanding among its mechanical characteristics are strength under stress, as demonstrated by its stability in hot water, good elasticity, and impact resistance, producing good results in all bending, stretching, and impact tests.