Astaxanthin is a natural sunscreen
6.0Moderate
evidence
evidence
The Claim
Some claim that astaxanthin acts as an internal sunscreen, providing protection against UV damage when consumed regularly.
Origin
This idea is popular in natural health circles and is often based on the antioxidant properties of astaxanthin, which are believed to mitigate UV-induced oxidative stress.
What Science Says
Research, including small human studies, suggests astaxanthin may reduce some markers of UV damage. However, it does not replace the need for topical sunscreens, which provide a physical barrier. The protective effect is not strong enough to be relied upon as sole sun protection.
Verdict
Misleading
Sources
- PMID:29941810 The Protective Role of Astaxanthin for UV-Induced Skin Deterioration in Healthy People-A Randomized, Double-Blind, Placebo-Controlled Trial.
- PMID:32202443 Effects of Astaxanthin Supplementation on Skin Health: A Systematic Review of Clinical Studies.
- PMID:40105670 Xanthophylls: potential benefits in protecting against UV burns.