What Is Astaxanthin,
and Why Is It in So Many Skincare and Supplement Products?
The deep red pigment behind salmon, flamingos and a growing number of serums and softgels — explained simply.
If you've scanned the ingredients list on a serum, a softgel, or even fish oil packaging lately, there's a good chance you've spotted astaxanthin. It's one of those names that sounds synthetic and lab-made, but it's actually one of the most naturally occurring pigments on the planet — and it's the reason salmon is pink and flamingos are, well, flamingo-coloured.
Here's what astaxanthin actually is, where it comes from, and why it's turned up in so many skincare and supplement formulas.
Where Astaxanthin Actually Comes From
Astaxanthin is a carotenoid — the same broad family of pigments that gives carrots their orange colour and tomatoes their red. It's produced naturally by a species of microalgae called Haematococcus pluvialis. When this algae is stressed by conditions like intense sunlight or low water, it produces astaxanthin as a natural protective pigment.
That astaxanthin then moves up the food chain: krill and other small crustaceans eat the algae, salmon and trout eat the krill, and that's why wild salmon has its distinctive deep pink-red colour. Most astaxanthin used in skincare and supplements today is derived directly from cultivated Haematococcus pluvialis algae, grown specifically for this purpose.
Why It's Turned Up in So Many Products
Astaxanthin belongs to the carotenoid family, alongside better-known relatives like beta-carotene and lutein. Like other carotenoids, it's a naturally occurring antioxidant compound, and it's one of the more potent members of that family in laboratory studies — which is part of why it's attracted so much interest from supplement and skincare formulators.
Astaxanthin supplements are typically sold as softgels, often alongside other carotenoids or oils, and are commonly taken as part of a general daily wellness routine. Dosing on the market generally ranges from around 4mg to 12mg per serving.
In skincare, astaxanthin is increasingly used as an antioxidant active in serums, moisturisers, and sun-care products. Formulators are drawn to it for the same antioxidant properties that make it popular as a supplement, applied topically instead of taken orally.
A Quick Snapshot
| Aspect | Detail |
|---|---|
| Type of compound | Carotenoid (antioxidant pigment) |
| Natural source | Haematococcus pluvialis microalgae |
| Common supplement dose | Roughly 4–12mg per serving |
| Common formats | Softgels, serums, creams, sun-care |
Choosing an Astaxanthin Product
Not all astaxanthin is created equal. Look for products that specify the algae source (Haematococcus pluvialis is the gold standard), a clear milligram dose per serving, and — for supplements — third-party testing for purity. For skincare, check where astaxanthin sits in the ingredients list, since position generally reflects concentration.
- Astaxanthin is fat-soluble, so supplements are often best taken with a meal containing some fat.
- It's the same pigment that colours wild salmon — farmed salmon is sometimes given synthetic astaxanthin or canthaxanthin instead, which is a different consideration if you're eating it as food.
- In skincare, it's generally used as one antioxidant ingredient among several, not a standalone treatment.
- Check with your doctor or pharmacist before adding a new supplement if you're on medication or managing a health condition.
Curious about astaxanthin supplements?
We stock third-party tested astaxanthin formulas sourced from Haematococcus pluvialis algae.
Shop at Wellness Dispatch →Questions? Reach us at info@wellnessdispatch.co.nz
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