Real chemistrys environmental rescue mask is a weekly face mask infused with a firming serum to protect detoxify and brighten the look of your skin infused with a proprietary mthv complex the protein and antioxidant rich mask acts as a delivery system for the intensive serum it transports beneficial ingredients into your skin to help protect against free radicals and oxidative stress whilst banishing toxins with continued use it may help to reduce the appearance of dark spots fine line