Defeat dull skin in 20 minutes. Brightmud™ is a dual-action exfoliating mask treatment, working to both chemically and physically buff away unwanted dead skin cells with lactic acid (AHA), salicylic acid (BHA) and microfine pumice. Formulated with vitamin C and niacinamide to help brighten and even dull complexions, to reveal glowing skin instantly. Why dual exfoliate? To maximise skin brilliance and help to optimise the absorption of the rest of your regimen into skin. The chemical exfoliants loosen the bonds attaching dead skin cells while the physical exfoliants go to work and help to gently remove these layers of skin for optimal brilliance.