So, you’re searching for astaxanthin benefits. I don’t blame you. The antioxidant is being used in more formulas than ever, relied on to provide myriad skin and body benefits. If you’re stumped over the pronunciation (as-tah-zan-thin), don’t let that stop you from digging into the many potential plus points of incorporating it into your wellness or skincare routine.
What is astaxanthin?
“Astaxanthin is a naturally occurring carotenoid, a type of antioxidant pigment found in certain algae, seafood such as salmon, shrimp, lobster and certain fungi,” Dr Vikram Murthy, a GP and co-founder of the Harley Street clinic Murthy Health, explains to me. “Astaxanthin is responsible for the red or pink colour seen in these organisms, and is known for its powerful antioxidant and anti-inflammatory properties.” Astaxanthin is just one of more than 600 types of carotenoids. Other variations are responsible for the bright orange of a bunch of carrots, or the warm yellow shade of a sliced-open butternut squash.
Here’s where things get interesting. Astaxanthin is both a skincare ingredient and an oral supplement. Think of it like vitamin E or collagen. Both can be infused into creams, serums and masks but can also be taken in pill, capsule or liquid form. Astaxanthin is the same and appears frequently in ingredient lists for both skincare products and supplements. So, which form of astaxanthin is best for what? Let’s dive in.
What role does it play in skincare?
“In skincare, astaxanthin is known for its ability to neutralise free radicals and protect the skin from oxidative stress caused by UV rays and pollution,” says medical director and founder of Zkin, Dr Ifeoma Ejikeme. Oxidative stress is the technical term for when there are too many free radicals (unstable atoms that damage our cells) and not enough antioxidants (free radical-neutralising substances). “Antioxidants are great for brightening the skin, but also play a crucial role in supporting skin health by protecting from further oxidative damage,” adds Dr Sophie Shotter, aesthetic doctor and founder of Illuminate Skin Clinics.
Recently, the antioxidant astaxanthin has been popping up in skincare products galore. There’s Sarah Chapman’s Digital Shield, a day cream designed to counteract the dulling effects of pollution and blue light, and Dermalogica’s Multivitamin Power Recovery Cream, which works to repair and firm tired and stressed skin. Each product uses astaxanthin to improve hydration, protect against UV radiation, soothe inflammation and improve skin texture.
What are the benefits of astaxanthin?
Internally and externally, it works to neutralise the damaging effects of oxidative damage. How each version manifests, though, is slightly different.
- Strengthens the skin barrier
- Helps improve skin hydration
- Reduces the appearance of fine lines and hyperpigmentation
- Protects the skin against environmental aggressors
- Using it topically can enhance the UV protection of SPF
- “Some studies show that astaxanthin is significantly stronger than vitamin C, E and beta-carotene in neutralising oxidative damage,” according to Dr Murthy
- Protection against UV-induced damage
- Reduction in hyperpigmentation
- Supports eye health and protects against eye fatigue and age-related macular degeneration
- Promotes healthy brain function via the blood-brain barrier
Is there anyone who should not use astaxanthin skincare?
While versatile (and generally well tolerated), it is still an antioxidant. Dr Shotter says it’s worth being cautious about incorporating it alongside other potent active ingredients, like high-dose antioxidants or retinoids. “It’ll help you avoid irritation,” she warns. “Remember, antioxidant-rich products work best when applied during the day under sunscreen to provide maximum protection against environmental stressors,” says Dr Ejikeme, noting that, as most astaxanthin skincare products are in liquid form, applying it before other heavier products will help it absorb better.
Is there anyone who should not take it?
“Astaxanthin has mild blood-thinning properties, so individuals taking anticoagulant medications like warfarin or aspirin should take it with caution,” Dr Murthy explains. “Similarly, as it can lower blood pressure, those on antihypertensive medication should be mindful of potential side effects.” For individuals on immunosuppressant drugs, he is clear that a doctor’s permission must be sought before consumption as astaxanthin has immune-boosting properties. If you are pregnant or breastfeeding or have a shellfish allergy, Dr Murthy, again, recommends proceeding with caution.
Which foods are high in astaxanthin?
- Wild salmon
- Shrimp
- Lobster
- Crab
- Algae
- Certain fungi
- Red sea bream
- Rainbow trout
- Crawfish
This story first appeared in British Vogue.
