As an eco-friendly and biodegradable product, the Konjac sponge naturally balances the pH level of your skin as well as exfoliates and moisturizes it. It is gentle towards all skin types, and can even be used with infants and those with extremely delicate and sensitive skin. Instruction: Prep with a quick soak under water for 30 second and watch it grow in size into a soft sponge from its previous loofah like state.