There are many manifestations of skin oxidation, including dull complexion, uneven complexion, dry skin, fine lines and spots. Antioxidant cosmetics come from all kinds of fruits, because the process of skin aging is the process of oxidation, and skin care should be antioxidant. Sunlight, wind and radiation can all cause skin oxidative aging, so anti-oxidation is not a problem that only middle-aged and elderly people need to pay attention to. Young people often use antioxidant skin care products with better effects than middle-aged and elderly people.
Extended data
The earliest word "antioxidant" in cosmetics industry refers to the use of antioxidants to maintain the stability of materials. For example, many vegetable oils contain unsaturated double bonds, which will be oxidized by oxygen and rancid; Many active ingredients, such as vitamin A alcohol, are unstable in the presence of oxygen, and antioxidants are also needed to stabilize their activities.
Commonly used antioxidants include sodium sulfite and BHT (2 2,6-di-tert-butyl -4- methylphenol).
With the development of cosmetics industry, the concept of "skin needs anti-oxidation" has been put forward. People add antioxidants from food and pharmaceutical industries to cosmetics to enhance the anti-oxidation ability of skin, hoping to achieve better whitening and anti-aging ability. This stems from the free radical theory related to aging.
Harman, the founder of free radical theory, believes that aging is closely related to excessive oxygen free radicals and/or decreased scavenging ability in the body. Free radicals directly determine human health and aging. The ability of human body to scavenge free radicals is also the ability to resist oxidation. At the same time, the older you get, the lower your antioxidant capacity.
reference data
Baidu encyclopedia-antioxidant