Astaxanthin is a keto-carotenoid with a bright red color. It is widely found in nature, such as shrimp, crab, salmon, algae and other organisms. It is a powerful antioxidant with a unique molecular structure and physiological function. Natural astaxanthin is mainly synthesized by microalgae such as Haematococcus pluvialis through photosynthesis, while synthetic astaxanthin is prepared by chemical methods. However, natural astaxanthin has more advantages in terms of biological activity and safety.

The chemical name of astaxanthin is 3,3′-dihydroxy-4,4′-diketo-β,β′-carotene, and its molecular formula is CHO. Its molecular structure contains multiple conjugated double bonds, which is the key structural feature of its strong antioxidant properties. In different organisms, astaxanthin may be combined with different fatty acids to form esters, such as monoesters and diesters, and these ester forms may vary in stability and bioavailability.

Health products: Made into soft capsules, tablets and other forms, used to enhance immunity, resist fatigue, delay aging, etc., suitable for middle-aged and elderly people, people who use their eyes for a long time, and people who love beauty.
Cosmetics: Added to skin care products, such as creams, essences, masks, etc., it has antioxidant, moisturizing, whitening, anti-wrinkle and other effects, which can improve skin texture and enhance skin luster.
Aquaculture: As a feed additive, it can make aquatic animals such as shrimp, crab, salmon and other body colors more vivid, improve their commodity value, and enhance their immunity and reproductive ability.
Food industry: Used for food coloring, such as adding astaxanthin to beverages, cakes, candies and other foods to make them present an attractive red color, while increasing the nutritional value of food.

Strong antioxidant capacity: Astaxanthin's antioxidant capacity is 6000 times that of vitamin C, 1000 times that of vitamin E, and 10 times that of beta-carotene. It can effectively remove free radicals in the body, reduce oxidative damage, and prevent a variety of chronic diseases, such as cardiovascular disease and cancer.
Anti-inflammatory properties: It can inhibit the release of inflammatory mediators, reduce inflammatory reactions, and has a certain preventive and mitigating effect on inflammatory-related diseases such as arthritis and enteritis.
Protect vision: It can cross the blood-eye barrier, accumulate in tissues such as the retina of the eye, filter harmful blue light, protect the eyes from light damage, and prevent eye diseases such as retinopathy and macular degeneration.
Skin beauty: It prevents free radicals from damaging the skin, reduces wrinkles, increases skin elasticity, and can also inhibit melanin production, which has the effect of whitening and removing spots.
High safety: As a natural pigment and nutrient, natural astaxanthin has good safety, no obvious toxic side effects, and can be taken for a long time.