Astaxanthin
A red carotenoid from microalgae — one of the most potent known antioxidants. Best supported for skin resilience against UV stress and skin elasticity.
How it works
Astaxanthin is a red carotenoid and one of the most potent known fat-soluble antioxidants. It embeds in cell membranes and protects them from free-radical oxidation, especially in skin, eyes and mitochondria. The main discussed effects are skin (UV) protection, eye health and recovery.
Dosage
Typically 4–12 mg/day, fat-soluble — so take with a fat-containing meal. Usually from Haematococcus pluvialis algae.
Considerations
Extremely antioxidant in vitro; in humans the evidence is strongest for skin (UV resilience, elasticity — small RCTs) and eye/screen fatigue. Broader longevity claims are preliminary. Well tolerated; very high doses can slightly tint the skin orange (harmless).
