A Beautyblender is a makeup sponge used to apply makeup that is made of sponge foam and dye, with the sponge foam coming from polyurethane, a petroleum-based product. Proper care is essential for your blender and should help prevent any mold. It is recommended to wash your Beautyblender after every use with a tailor-made cleanser. Cleaning the sponge regularly is important to prevent contamination of makeup and the growth of mold. The Blendercleanser is a gentle soy-based formula that won’t ruin the sponge, but that does remove pigments, oil, and dirt. It is also low-sudsing, which is important because rinsing the soap out of the sponge is quite a job. The surface of the sponge can develop small micro tears and some bigger tears too, so it is recommended to stick to brands of makeup sponges you know and love. The materials that make up the Beautyblender are derived from fossil fuels and synthetic chemicals that cant biodegrade and will contaminate the environment.