This is a great sponge! It is 100% natural. It has no coloring and is additive free. It is also 100% Biodegradable. It exfoliated my skin well, it's absolutely great at exfoliating. If you have sensitive skin this is great! I used it to massage my skin and stimulated blood flow, I could feel a tingling feeling which had to be the blood flow being stimulated. Once the sponge is wet it is not rough like when it is dry. After using this I hung it up by the string that it has attached to it to allow it to dry out. I can tell that is helped eliminate blackheads and my skin is much softer.