Oxidative Stress
Oxidative Stress — an imbalance between the production of reactive, oxygen-containing molecules and the body's ability to neutralize them with antioxidants, resulting in damage to cells and tissues. In skin, oxidative stress is driven by factors like UV radiation and pollution and is considered a key contributor to premature aging.
Key points
- It occurs when reactive oxygen species outpace the skin's antioxidant defenses, leading to cellular damage.
- Major external triggers include ultraviolet light, air pollution, and cigarette smoke, while normal metabolism also generates some reactive molecules.
- Oxidative damage can affect lipids, proteins, and DNA, contributing to collagen breakdown, pigmentation changes, and fine lines.
- Topical and dietary antioxidants, along with sun protection, are commonly used strategies to help limit oxidative stress in skin.
Frequently asked
What causes oxidative stress in the skin?
It is mainly driven by environmental factors like UV radiation, pollution, and smoke, combined with reactive molecules produced during normal metabolism, that overwhelm antioxidant defenses.
Can antioxidants reverse oxidative damage?
Antioxidants can help neutralize reactive molecules and reduce ongoing damage, but they are best viewed as protective support rather than a way to fully undo existing damage.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
