Spirulina Subsalsa Extract

Spirulina subsalsa extract is derived from a cyanobacterium (blue-green algae) and contains polysaccharides—long-chain carbohydrate molecules. The extract is processed to isolate these compounds, which have a semi-rigid starch-like structure composed primarily of glucose units.In skincare formulations, spirulina subsalsa extract is classified as a skin protectant. The polysaccharides it contains are thought to help support skin's natural defences and resilience, particularly against environmental stressors that contribute to premature ageing.

The polysaccharides in spirulina subsalsa extract work through several mechanisms. They can absorb and scatter UV radiation, reducing the amount that reaches deeper skin layers. They also neutralise free radicals generated by sun exposure and environmental pollution, which would otherwise trigger inflammation and collagen breakdown.Additionally, these polysaccharides can hydrate the skin and form a protective layer on the surface, helping to reinforce the skin barrier and reduce transepidermal water loss.

Spirulina subsalsa extract is typically incorporated into serums, moisturisers and sunscreen formulations. It works well alongside other antioxidants and UV filters. For best results, use consistently as part of a broader sun-protective routine—the extract complements rather than replaces broad-spectrum SPF protection.

Spirulina subsalsa extract is generally well-tolerated and is derived from a food-grade source. Those with cyanobacterial allergies or sensitivity should patch-test first.