How Antioxidants Neutralize Free Radicals
How Antioxidants Neutralize Free Radicals — molecules that protect skin by donating electrons to unstable free radicals, stabilizing them before they can damage cells. This interrupts the chain reactions that would otherwise harm collagen, cell membranes, and DNA.
Key points
- Free radicals are reactive molecules with unpaired electrons, generated by UV light, pollution, and normal metabolism.
- Antioxidants such as vitamins C and E neutralize these molecules by giving up an electron without becoming reactive themselves.
- By quenching free radicals, they help limit oxidative stress that contributes to premature aging and dullness.
- Certain antioxidants work synergistically, for example vitamin E can be regenerated by vitamin C, extending overall protection.
Frequently asked
Do antioxidants replace sunscreen?
No, antioxidants complement sunscreen by neutralizing free radicals that form despite SPF, but they do not block UV rays and should be used alongside daily sun protection.
Why are some antioxidants unstable in skincare products?
Ingredients like pure vitamin C can oxidize when exposed to light and air, which is why they are often packaged in opaque, airtight containers or paired with stabilizing antioxidants.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
