Dr H Hyaluronic Acid Anti-Ageing Mask used Hyaluronic Acid to help increase the moisture levels in your skin, all whilst preserving from future damage by protecting it from pollution and environmental damage. Dullness, hyper-pigmentation, and dehydration can be caused by pollutants such as soot and smoke in the atmosphere breaking down our skin’s protective antioxidant levels. Stearic acid, with its cleansing properties, will help to restore the skin’s resilience and provide clarity in the skin’s complexion.