Antioxidant Defense in Skin
Antioxidant Defense in Skin — the collection of enzymes, vitamins, and other molecules that neutralize reactive oxygen species and help protect skin cells from oxidative damage. This defense includes compounds the body makes itself as well as antioxidants obtained through diet and topical products, working together to maintain balance against everyday oxidative stress.
Key points
- The skin has its own enzymatic antioxidants, such as superoxide dismutase and catalase, that break down reactive molecules.
- Dietary antioxidants like vitamins C and E contribute to the skin's defenses and can be depleted by UV exposure.
- Topical antioxidants are used in skincare to supplement the skin's natural defenses, often paired with sunscreen for added protection.
- Antioxidants frequently work in networks, where one can help regenerate another, making combinations potentially more effective than single ingredients.
Frequently asked
Do topical antioxidants replace sunscreen?
No; antioxidants complement sun protection by helping neutralize free radicals, but they do not block UV rays, so sunscreen remains essential.
Which antioxidants are common in skincare?
Vitamin C, vitamin E, niacinamide, and plant-derived polyphenols are among the most common, and they are often combined to support each other's activity.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
