Black Rock Clean – By Heidi Bethel. Smooth on the buttery green mask. Feel as it begins to cool the minute it touches your skin. Wipe away to reveal refreshed, hydrated, beautiful skin.While this may sound like an ad for the next big beauty product engineered in a lab somewhere with a slew of ingredients designed to give your face that special glow, this amazing cosmetic anomaly was made by miss Mother Nature herself. It’s MudPot. It’s amazing.