What it is
Saccharina longicruris extract is derived from a species of brown seaweed (kelp) found in cold northern waters. Like other brown algae extracts it supplies polysaccharides, minerals, and other marine-derived compounds that contribute skin-conditioning and water-binding properties. In formulations it is used as a supporting marine botanical, typically at low concentrations.
Safety & warnings
As a water-based marine extract used at low levels, it is generally well tolerated and is not considered comedogenic. Individuals with known sensitivities to seaweed or marine ingredients may wish to patch test. No distinctive fragrance allergen concerns are commonly associated with this ingredient.
Origin & sourcing
Natural, marine-derived. It is obtained by extracting the thallus of the brown seaweed Saccharina longicruris, harvested from cold-water coastal environments.
Questions everyone asks
What is Saccharina longicruris?
It is a species of brown seaweed, a type of kelp from cold northern waters. The cosmetic ingredient is an extract of this seaweed used as a marine botanical.
What does the seaweed extract do?
It provides skin-conditioning and water-binding marine compounds such as polysaccharides and minerals. It does not provide UV protection.