
General Description
Astaxanthin is a powerful red-orange carotenoid pigment naturally derived from microalgae (Haematococcus pluvialis), yeast, shrimp, krill, and certain fish species such as salmon. Known as one of the strongest natural antioxidants, Astaxanthin is highly effective at neutralizing free radicals and protecting cells from oxidative stress. Its exceptional stability and bioactivity make it a valuable ingredient in skincare and cosmetic formulations targeting aging, photodamage, and inflammation.
Uses in the Cosmetic Industry
Astaxanthin is widely used in high-performance skincare due to its advanced antioxidant and skin-protective capabilities. Common applications include:
- Anti-Aging Creams & Serums:-Reduces the appearance of fine lines, wrinkles, and loss of elasticity by protecting collagen and promoting skin firmness.
- Brightening & Radiance Products:-Helps improve skin tone, reduce dullness, and enhance natural glow.
- Sun Care & After-Sun Products:-Offers protection from UV-induced oxidative stress and helps reduce signs of photoaging.
- Moisturizers & Barrier Support Formulas:-Enhances skin hydration and protects against environmental stressors and blue light damage.
- Eye Creams:-Helps reduce dark circles, puffiness, and oxidative stress around delicate eye areas.
- Haircare Products:-Supports scalp health and protects hair fibers from environmental damage.
Astaxanthin is favored in premium and science-backed cosmetic formulations where strong antioxidant performance is required.
Hazards
Astaxanthin is generally safe for cosmetic use, but several considerations apply:
- Skin Sensitivity:-Rare, but high concentrations may cause temporary redness or irritation in sensitive individuals.
- Staining Risk:-Due to its intense red pigment, Astaxanthin may lightly tint formulations or skin at high usage levels.
- Oxidation Sensitivity:-Although more stable than many carotenoids, improper storage may cause degradation and color fading.
- Allergic Reactions:-Very uncommon but possible, especially in individuals with seafood or algae sensitivities (depending on source).
- Eye Irritation:-Not recommended for direct application inside the eyes.
Storage & Stability
- Store in a cool, dark environment away from heat and light.
- Strongly benefit from antioxidant stabilizers in formulations.
- Packaging in airtight, UV-protective containers is recommended.
CAS Number:472-61-7
INCI:Astaxanthin
Composition:Astaxanthin is a naturally occurring keto-carotenoid belonging to the xanthophyll family. It consists mainly of all-trans-astaxanthin, with small amounts of cis isomers. It may be obtained from microalgae (Haematococcus pluvialis), yeast (Phaffia rhodozyma), or synthetic sources.
Purity Grade:Cosmetic / Nutraceutical Grade (commonly 1%–10% oleoresin or ≥98% pure crystalline form depending on supplier)
Appearance:Dark red to deep reddish-purple powder or viscous oil (depending on form)
Solubility:
- Insoluble in water
- Soluble in oils, fats, ethanol, supercritical CO₂ extracts, and some organic solvents
Preservation:Astaxanthin is highly prone to oxidation; antioxidants such as tocopherols or ascorbyl palmitate are often added. Store in oxygen-free, light-protected containers.
Raw Material Sources:
- Haematococcus pluvialis microalgae (most common natural source)
- Phaffia rhodozyma yeast
- Marine crustacean byproducts (less common in cosmetics)
- Synthetic sources (petrochemical origin)
Manufacture:Produced by:
- Cultivation of microalgae followed by harvesting, drying, extraction (usually CO₂ supercritical extraction) and purification
- Fermentation-based yeast cultivation and extraction
- Synthetic chemical synthesis for high-purity grades
Animal Testing:Not animal tested
GMO:Typically GMO-free (microalgae-based). Yeast-based origins may be GMO-free depending on supplier.
Vegan:Yes, when derived from microalgae or yeast
(No, if derived from marine crustaceans)
Proposition:ASTAXANTHIN meets cosmetic regulations including EU Cosmetic Regulation (EC) No. 1223/2009 and is permitted for skincare and antioxidant applications.
Warning:Avoid inhalation of powders. May stain skin or equipment due to intense pigmentation. Store in an airtight, cool, dry place away from direct light and heat. Use appropriate protective equipment during handling.
Formulator’s Queries, We Answered
1. What is astaxanthin?
Astaxanthin is a naturally occurring carotenoid (red/orange pigment) best known as the pigment in microalgae, salmon and crustaceans. In cosmetics it is used for its strong antioxidant and anti-inflammatory properties that help protect skin from oxidative stress and photo-damage
2. What is the CAS number of astaxanthin?
CAS number:472-61-7.
3. What is the INCI name for astaxanthin?
As a standalone ingredient: listed in ingredient databases as ASTAXANTHIN.
As an algal source (very common in cosmetics): Haematococcus Pluvialis Extract (this INCI denotes the microalgal extract that is rich in astaxanthin). Use the INCI that matches your raw material (pure astaxanthin vs. algal oleoresin/extract)
4. What are the claimed skin benefits?
Topical astaxanthin is reported to: reduce oxidative stress, help protect against UV/photo-damage, reduce inflammation, support collagen preservation (anti-aging), improve skin texture/radiance and aid moisture retention. These activities are supported by preclinical and clinical studies and systematic reviews.
5. Is astaxanthin oil- or water-soluble? How is it formulated?
Astaxanthin is lipophilic (oil-soluble). It is most commonly supplied as an oily oleoresin or algal extract and should be incorporated into the oil/lipid phase of emulsions or delivered via lipid carriers (nanoemulsions, liposomes, micelles, solid lipid nanoparticles) to improve stability and skin penetration