Brush It On donate 100% of their profits to conservation projects that protect the world’s oceans, forests and wildlife. The Japanese have been using these sponges for centuries as a way of gently cleansing and exfoliating their skin. They are made from a porous root vegetable native to Asia and are pH neutral. The sponge is hard, but softens when soaked. Please use caution if you have particularly sensitive skin. Colours vary.