Nostoc Flagelliforme Extract

Nostoc flagelliforme extract is derived from a filamentous cyanobacterium (sometimes called blue-green algae) found in arid environments. The organism produces polysaccharides and other compounds that allow it to survive in dry conditions by binding and holding water effectively.In skincare formulations, this extract functions primarily as a humectant — a substance that draws moisture from the environment into the skin and helps lock it in place. It is typically incorporated into hydrating serums, essences, and moisturisers.

Nostoc flagelliforme extract contains polysaccharides and glycoproteins that are hygroscopic — meaning they have a natural affinity for water molecules. When applied to skin, these compounds sit on or within the outer layers and attract moisture from both the environment and deeper skin layers, drawing it toward the surface.This mechanism is similar to how other established humectants work. The extract also supports the skin's natural moisture-binding capacity, helping to reduce water loss over time.

Use Nostoc flagelliforme extract as part of a hydrating routine, typically in serums or essences applied to clean, damp skin. For best results, follow with a moisturiser to seal in the hydration the humectant has drawn to the skin surface. It works well alongside other hydrating ingredients such as glycerin or hyaluronic acid, and is generally suitable for use morning and evening.

Generally considered well-tolerated in skincare formulations. Allergic or irritant reactions are rare, though patch testing is advisable for those with sensitive or reactive skin.