Astaxanthin

Supplements · Antioxidants · Supplement, Typed Supps

The pigment that makes salmon and flamingos pink.

Stage by stage

Intake (Softgel): Fat-soluble, absorbed via the same bile-dependent route as other fat-soluble compounds.
Small intestine (Micelle transport): Fat-soluble, absorbed via the same bile-dependent route as other fat-soluble compounds.
Bloodstream (Bound to lipoproteins): Circulates bound to lipoproteins.
Skin & eye tissue (Concentrates here): Concentrates in skin and eye tissue, studied for antioxidant and UV-related skin protection.

What the evidence supports

Protecting skin from UV damage and improving moisture and elasticity — limited evidence. Several small randomised trials of 6–12 weeks show modest changes in UV redness, wrinkles and water loss. Small, short, and often on specific populations.
Acting as a general systemic antioxidant with clinical benefit — limited evidence. It measurably lowers oxidative-stress markers, but hard clinical endpoints remain untested in large trials.
Evidence on Tolerability at supplement doses — moderate evidence. Reviews spanning thousands of participants report good tolerability at 4–12 mg/day for up to a year; EFSA regards up to 8 mg/day as safe.

Typical dose

4–12 mg daily

Upper limit: No formal UL; EFSA considers up to 8 mg/day from diet and supplements safe for adults

Timing

With a fat-containing meal.

Time to effect

Weeks: Any reported skin-related effect in studies.

Common myth

“Astaxanthin replaces sunscreen.” In reality: May offer modest antioxidant support against UV-related stress, but doesn’t block UV rays — not a substitute.