Skin Conditioning

Spirulina Platensis Extract

INCI: SPIRULINA PLATENSIS EXTRACT

Reviewed by Daisy · Last updated 14 Aug 2026

A microalgae extract with antioxidant and skin-protective properties

Best For Skin Types

All

Addresses

Sensitivity, Redness

Effective Concentrations

0.01%

Usage Frequency

Daily

What Is Spirulina Platensis Extract?

Spirulina platensis is a blue-green microalga harvested as a whole organism or processed into an extract form for skincare use. The extract contains bioactive compounds including phycocyanin, carotenoids, and other antioxidant molecules that can be incorporated into creams and serums at relatively low concentrations.

In formulations, spirulina platensis extract functions primarily as a skin protectant, working to defend the skin against environmental stressors and oxidative damage. It appears in roughly 0.3% of skincare products, suggesting it remains a relatively niche ingredient within the broader market.

How It Works

Spirulina platensis extract works primarily through its high concentration of antioxidant compounds. These molecules neutralise free radicals—unstable oxygen species that accumulate in skin cells from sun exposure, pollution, and normal metabolism. By reducing this oxidative stress, the extract helps protect skin cells from damage and supports their normal functioning.

The extract also appears to have anti-inflammatory properties, which may help calm inflammatory skin responses triggered by UV exposure or environmental irritants. Some research suggests it can modulate the skin's natural antioxidant defence systems, potentially strengthening the skin's ability to protect itself.

Clinical Evidence & References

In vitro studies demonstrate that spirulina platensis extract exhibits strong antioxidant activity and can reduce oxidative stress markers in skin cells. Research shows the extract reduces intracellular reactive oxygen species and supports cell survival under stress conditions. At low concentrations (0.01%), it has shown potential to support wound healing in laboratory models without cytotoxic effects.

Animal studies suggest dietary spirulina platensis may help reduce UVB-induced skin damage and inflammatory responses. However, most published evidence comes from in vitro or animal models rather than human clinical trials, so the degree to which these effects translate to real-world skincare use remains uncertain. Human studies would help establish clearer efficacy in finished products.

How to Use

Spirulina platensis extract is typically used as part of a complete skincare routine rather than as a standalone treatment. It works well in moisturisers and protective serums applied to clean skin. Since it functions as a protectant and antioxidant, it complements sun protection strategies rather than replacing them. Use consistently as part of your daily routine for the best results.

Safety & Precautions

Spirulina platensis extract is generally well-tolerated in skincare formulations at typical use levels. No significant safety concerns have been identified in published research, though patch testing is advisable if you have known sensitivities to algae-derived ingredients.

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Other forms of Spirulina Platensis Extract

These appear on ingredients lists under different names but are the same substance. Spirulina Platensis Extract is the common form.

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