Astaxanthin
Astaxanthin — a red-orange carotenoid pigment sourced mainly from the microalga Haematococcus pluvialis, known for being one of the more potent antioxidants studied in skincare. Applied topically, it helps neutralize free radicals and support skin resilience against oxidative and environmental stress.
Key points
- Astaxanthin is a xanthophyll carotenoid that gives salmon, krill, and certain algae their characteristic reddish hue.
- It is often cited as a strong singlet-oxygen quencher, giving it notable antioxidant activity in laboratory studies.
- Topically it is used to help defend skin against free radicals produced by UV exposure and pollution.
- Because of its deep color, it is typically used at low concentrations and may impart a slight tint to formulas.
Frequently asked
Where does astaxanthin come from?
Most cosmetic astaxanthin is derived from the microalga Haematococcus pluvialis, which produces the pigment as a natural protective response to stress.
Is astaxanthin an antioxidant?
Yes, it is a carotenoid antioxidant widely studied for its ability to neutralize free radicals and help protect skin from oxidative damage.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
