Gigartina Stellata/Kappaphycus Alvarezii Extract

Gigartina stellata and Kappaphycus alvarezii are species of red algae (seaweed) harvested from marine environments. This extract is derived by processing these algae to isolate their bioactive compounds, which include polysaccharides, amino acids, and minerals naturally present in seaweed.In skincare formulations, the extract functions primarily as a skin protectant. The polysaccharide content helps support the skin's natural moisture barrier and may provide a light film-forming effect on the skin's surface.

Red algae polysaccharides work by forming a protective layer on the skin's surface, which helps reduce transepidermal water loss. This creates a more hydrated skin environment without occluding pores significantly.The extract's amino acid profile also supports the skin's natural moisturising factor, contributing to overall hydration and skin softness. The protective mechanism is gentle and suitable for regular use.

This ingredient is gentle enough for daily use and works well in hydrating serums, creams, and masks. It pairs well with other humectants like glycerin and hyaluronic acid, and complements barrier-repair ingredients. Apply to clean skin as part of your regular routine; no specific timing restrictions apply.

Generally well-tolerated by most skin types. Those with shellfish or iodine sensitivity should check product labelling, as seaweed-derived ingredients may contain trace iodine. Patch test if you have very sensitive skin.