What it does
- Provides potent antioxidant defence against environmental and UV-induced stress.
- Supports a smoother, more youthful-looking complexion.
- Effective at very low levels.
How it works
Astaxanthin is a carotenoid (from microalgae such as Haematococcus pluvialis) widely documented as a strong lipid-soluble antioxidant. It is deeply red and used at very low levels; it is sensitive to light and oxidation.
Use level
- Typical use level
- typically 0.01–0.1%
Used at very low levels, commonly 0.01–0.1%. Its intense red colour and cost usually keep levels low.
Formulation considerations
- Oil-soluble; dissolve into the oil phase.
- Deeply red — colours formulas even at low levels.
- Light- and oxidation-sensitive; protect and package appropriately.
What it pairs with & what to avoid
Pairs well with
- Vitamin E and other antioxidants
- Emollients and facial oils
Use with care / avoid
- High levels (colour, cost)
- Light/air exposure without protection
Regulatory status
Astaxanthin is listed in the EU CosIng database and is a well-established antioxidant ingredient.
Common questions
What does astaxanthin do for skin?
It is a potent carotenoid antioxidant that protects against environmental and UV-induced stress and supports a youthful-looking complexion.
What percentage of astaxanthin is used?
Very low — commonly 0.01–0.1%.
Why is astaxanthin red?
It is a red carotenoid pigment, so it colours formulas even at low levels.