Active oxygen has strong penetration and antioxidant capacity. It can quickly decompose and sterilize the oil, dirt and bacteria in the skin and even the pores, and can peel off the dirt to achieve the effect of complete removal. The active oxygen in the active oxygen bubble is not oxygen, but a gas with a special smell, commonly known as ozone. It has high oxidation, but people with sensitive skin or lack of water will have a slight tingling.