What it is
This is a broad ingredient name covering extracts obtained from various species of algae, which may include marine seaweeds and freshwater microalgae. Such extracts contribute polysaccharides, minerals, amino acids, and other water-soluble compounds that help condition and hydrate the skin surface. In formulations it is typically used as a moisturizing botanical and as part of a marine-themed ingredient blend.
Safety & warnings
Algae extract is generally well tolerated in topical use. Because it is of marine origin, individuals with relevant sensitivities may wish to note the source, and composition can vary between species and suppliers. It is not a recognized fragrance allergen and is not associated with comedogenicity.
Origin & sourcing
Natural; obtained by extracting algae, which may be marine seaweeds or other algal species, with the exact source varying by supplier.
Questions everyone asks
What does algae extract do in a sunscreen?
It conditions and hydrates the skin surface, contributing polysaccharides, minerals, and amino acids from the algae.
Is algae extract always the same thing?
No. It is a general term covering extracts from different algal species, so its exact composition varies by source and supplier.