The Pritty Deep Purifying Green Tea Bubble O2 Mask is a wash-off sheet mask that generates oxygen bubbles to deeply cleanse and purify the skin. Infused with green tea extract, this mask helps remove impurities, dead skin cells, and excess sebum while providing moisturizing and pore-refining benefits. This is a single-use sheet mask weighing 25g. The mask appears to offer multiple skin benefits including purifying, moisturizing, vitalizing and pore refining effects through its oxygen bubble technology combined with green tea extract. As this is a personal care product, specific usage instructions should be followed according to package directions for optimal results.