After spending entirely too much time researching peptides, exosomes and salmon sperm, I kept coming back to one ingredient I hadn’t expected to find so interesting.
Astaxanthin.
It doesn’t have the most appealing name. But the more I learned about it, the more I wondered why we weren’t talking about it more.
Astaxanthin is a naturally occurring red pigment and antioxidant produced by certain microalgae. It’s also responsible for something you’ve probably seen your entire life without realizing it: the pink color of salmon, shrimp and even flamingos.
Unlike many of the newer ingredients currently having their beauty moment, astaxanthin has been studied for decades.
That got my attention.
Why Astaxanthin Is Interesting
Astaxanthin is a carotenoid—a family of naturally occurring pigments that includes beta-carotene and lutein.
One of its best-known natural sources is a microalga called Haematococcus pluvialis.
When the algae is exposed to environmental stress, it produces astaxanthin as part of its own protective response. Animals eat organisms containing the pigment, it moves through the food chain, and eventually you get pink salmon.
Or a pink flamingo.
Which is considerably more interesting than the name Haematococcus pluvialis suggested this section was going to be.
For skincare, though, the color isn’t what interested us most.
It was the antioxidant activity.
Let’s Talk About Antioxidants Without Making This Painful
You’ve probably heard that antioxidants fight free radicals approximately 4,000 times by now.
But what does that actually mean?
Our skin is constantly exposed to environmental stressors. UV exposure, pollution and normal cellular processes can generate unstable molecules known as free radicals.
Antioxidants can help neutralize some of that oxidative activity.
That’s why ingredients like vitamin C and vitamin E have been used in skincare for decades.
Astaxanthin belongs to that same broader antioxidant conversation, and laboratory research has found strong antioxidant activity.
You’ll sometimes see very specific claims that astaxanthin is 65 times stronger than vitamin C or 100 times stronger than vitamin E.
This is where I put my skeptical hat back on.
Those numbers come from particular laboratory testing methods. Change what you’re measuring or how you’re measuring it, and the comparison changes too.
So I don’t think the most useful takeaway is that astaxanthin is exactly X times better than another antioxidant.
The useful takeaway is much simpler:
It’s an interesting, well-studied antioxidant with a substantial research history.
And that’s enough for me without turning it into a math competition.
But Does It Actually Do Anything for Skin?
This is the question I care about considerably more than what happens in a test tube.
There have been human studies looking at astaxanthin and skin, including research examining moisture, elasticity, texture and visible signs of photoaging.
The evidence isn’t perfect. Some studies are small, some have industry involvement, and much of the stronger clinical research involves oral supplementation rather than topical skincare.
I think that’s worth saying.
There is promising research around astaxanthin’s potential skin benefits, but human research specifically isolating topical astaxanthin is more limited. Formulation also matters because astaxanthin has stability and solubility challenges.
So why did it become interesting to us?
Because we weren’t evaluating it in isolation.
We were thinking about the lip.
Your Lips Are Kind of Terrible at Protecting Themselves
I mean this affectionately.
The skin on your lips is different from much of the skin on the rest of your face. The barrier is relatively delicate, which helps explain why lips can become dry and uncomfortable so quickly.
Then we subject them to everything.
Sun. Wind. Dry air. Airplanes. Air conditioning. Heat. Cold. Lipstick. Coffee. More coffee.
And unlike the skincare routine happening on the rest of our face, most of us aren’t exactly applying an antioxidant serum to our lips every morning.
That was one of the questions that kept coming up while we were developing Lip TX:
Why do we treat our lips like an afterthought?
We spend an absurd amount of money protecting and treating the skin around them.
Then we put on lip balm and call it a day.
We wanted to approach Lip TX differently.
Why Astaxanthin Made Sense for Lip TX
We weren’t looking for a trendy ingredient to put on the front of the box.
We wanted to formulate Lip TX more like a treatment—one designed to support the delicate skin of the lips with a considered combination of ingredients.
Astaxanthin became part of a broader antioxidant approach alongside fucoxanthin, stable oil-soluble vitamin C and tocopherol.
Not one hero ingredient expected to do everything.
A group of ingredients chosen to work within the same formula.
And I actually like that story much more.
Beauty has become obsessed with hero ingredients.
One peptide. One acid. One exotic extract that’s suddenly responsible for changing your entire face.
That’s not really how good formulation works.
The formula is the hero.
There’s One Other Thing Astaxanthin Does
It’s red.
Deep red.
And because it’s naturally pigmented, it can contribute a subtle warmth to a finished formula.
I love this because it isn’t color added simply to make the product prettier. It’s part of the ingredient itself.
There’s something satisfying about that—especially in a product designed to live somewhere between treatment and the thing you actually want to pull out of your handbag.
The Takeaway
After researching ingredients for Lip TX, I kept coming back to the same philosophy:
I don’t need an ingredient to be new.
I need to understand why it’s there.
Astaxanthin had the things we were looking for: an established research history, antioxidant activity and a reason to exist within the formula we were building.
Does that make it a miracle ingredient?
No.
I don’t really believe in miracle ingredients.
Does it mean astaxanthin alone is going to transform your lips overnight?
Also no.
But as part of a well-designed antioxidant and barrier-supporting treatment, it’s a much more interesting ingredient than its relatively low profile would suggest.
That’s why we included it in Apposé Lip TX.
What’s on the ingredient list matters. How it’s formulated matters just as much.
Apposé Lip TX. Arrive Ready.
A Few Questions I Had Too
Is astaxanthin safe for daily use?
Astaxanthin has been used in foods, supplements and cosmetic applications for years. Published human studies have generally reported good tolerability, although—as with any cosmetic ingredient—individual sensitivities are possible.
Is astaxanthin better than vitamin C?
I wouldn’t frame it that way.
They’re different antioxidants with different chemical properties, and the exact “X times more powerful” comparisons you see online depend on the laboratory method being used.
Which is why Lip TX doesn’t make you choose.
We formulated with astaxanthin alongside a stable oil-soluble form of vitamin C and tocopherol.
Can I get astaxanthin from food?
Yes.
Salmon, shrimp, krill and lobster can contain naturally occurring astaxanthin.
It’s part of what gives them their distinctive reddish-pink color.
And yes, it’s also connected to why flamingos are pink.
You’re welcome for the completely unnecessary fact you’ll now repeat at dinner.
Does astaxanthin work topically?
There’s promising research around astaxanthin and skin, but this is another place where I don’t want to overstate the evidence.
Human research specifically isolating topical astaxanthin is much smaller than the overall astaxanthin research base, and formulation matters because astaxanthin has stability and solubility challenges.
Which brings us back to the point at the heart of this entire ingredient series:
What’s on the ingredient list matters. How it’s formulated matters just as much.
Sources:
the Cyanotech BioAstin technical briefing https://www.cyanotech.com/pdfs/bioastin/batl11.pdf
the Nutrex Hawaii scientific summary of the Nishida research https://www.nutrex-hawaii.com/blogs/learn/the-astaxanthin-difference
this PubMed Central review of astaxanthin in vitro https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6562539/
accessible through PubMed https://pubmed.ncbi.nlm.nih.gov/22428137/
the Apposé Lip TX product page https://shopappose.com/products/appose-liptx