(3R)-beta-4-Caroten-3-ol
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A vitamin A-derived carotenoid with antioxidant and potential skin-repair properties, generally safe for cosmetic use at low concentrations.
(3R)-beta-4-Caroten-3-ol (also called astaxanthin when esterified or related to beta-carotene) is a carotenoid pigment derived from vitamin A metabolism. Carotenoids are potent antioxidants that scavenge free radicals and reduce oxidative stress in skin. The specific (3R) stereochemistry indicates a natural isomer. Topical application of carotenoids can provide photoprotective benefits and support skin barrier function. No EU restrictions apply to this class of compounds, and they are considered safe for cosmetic use within reasonable concentrations.
Skin benefits
- Potent antioxidant
- Photoprotective potential
- Skin barrier support
- Anti-inflammatory properties
Known concerns
- Generally very safe
- May color skin at high concentrations (orange-red)
- Vitamin A activity at high doses warrants caution in pregnancy
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.