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ingestible · for skin aging & collagen support

Astaxanthin

Reviewed by the Nimbera editorial team · Last updated May 2026

Tominaga 2017 J Clin Biochem Nutr (PMID 28751807) - double-blind RCT, 65 women, 6 mg or 12 mg oral astaxanthin vs placebo for 16 weeks; wrinkle parameters and skin moisture content significantly worsened in the placebo group but remained stable in the astaxanthin groups, with MMP-1 suppression confirmed in vitro.$20-$40 per month for a 6-12 mg daily dose

How to use

Take 6-12 mg of astaxanthin once daily with a fat-containing meal to maximize absorption, as it is a fat-soluble carotenoid. Higher-quality products specify Haematococcus pluvialis as the source. Use consistently for at least 12-16 weeks for best results.

How it works

Astaxanthin is a ketocarotenoid with exceptional antioxidant potency estimated at 6,000x that of vitamin C in singlet oxygen quenching. It crosses skin cell membranes, neutralizing UV-generated reactive oxygen species, suppressing MMP-1 collagen-degrading enzyme activity, and inhibiting inflammatory cytokines (IL-1alpha) in keratinocytes that drive photoaging.

Where to buy

BioAstin Hawaiian Astaxanthin (grown from Haematococcus pluvialis), Nutrex Hawaii Astaxanthin, NOW Foods Astaxanthin. Available at Amazon, iHerb, Costco, and health food stores.

Typical cost: $20-$40 per month for a 6-12 mg daily dose

Safety notes

Very safe profile in human trials up to 12 mg/day. May cause skin or stool to take on a slightly orange-pink tint at higher doses - harmless. Not a substitute for sunscreen; adds antioxidant defense but does not replace physical UV protection. Avoid in pregnancy or breastfeeding due to insufficient safety data. May interact with warfarin - consult a physician if on anticoagulants.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

Tominaga 2017 - J Clin Biochem Nutr (PMID 28751807)

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.