Evidence supporting the use of: Haematococcus pluvialis
For the health condition: Skin Care (general)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Haematococcus pluvialis is a freshwater microalga renowned as one of the richest sources of natural astaxanthin, a potent antioxidant carotenoid. Scientific evidence supports the use of astaxanthin, derived from H. pluvialis, in skin care formulations, primarily due to its antioxidant and photoprotective properties. Multiple in vitro and clinical studies have shown that oral and topical astaxanthin can reduce oxidative stress, protect skin cells from ultraviolet (UV)-induced damage, diminish wrinkles, and improve skin moisture and elasticity.

For example, randomized, double-blind, placebo-controlled trials have reported that supplementation with astaxanthin (often 4-6 mg per day) for 6-12 weeks can result in significant improvements in skin texture, elasticity, and moisture content, as well as reductions in age spot size and wrinkle depth. The proposed mechanism is that astaxanthin’s antioxidant capacity helps neutralize free radicals generated by UV radiation, thereby reducing inflammation and preventing collagen breakdown.

While most of the evidence comes from studies using astaxanthin rather than whole H. pluvialis extract, the microalga remains the principal commercial source. There is limited but promising evidence for topical use as well. Overall, the available research justifies the inclusion of H. pluvialis-derived astaxanthin in skin care for general skin health and photoprotection, though larger and longer-term studies would further strengthen the evidence base.

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