Seaweed ●
TL;DR. This ingredient is used mainly as a skin-conditioning and humectant botanical extract. It adds polysaccharides, minerals, and light film-forming compounds that improve slip and support a hydrated skin feel.
What does Seaweed do in a cosmetic formula?
This ingredient is used mainly as a skin-conditioning and humectant botanical extract. It adds polysaccharides, minerals, and light film-forming compounds that improve slip and support a hydrated skin feel.
Is Seaweed clean?
From a clean-beauty perspective, it is generally well-tolerated and not a common restricted-list concern. The main quality checks are sensitivity in reactive skin, iodine content, microbial control, and screening for marine contaminants such as heavy metals.
Is Seaweed sustainable?
It comes from renewable aquatic biomass and is biodegradable, with low-input cultivation possible because it does not require irrigation or fertilizer. Sustainability depends on responsible harvesting, traceability, and contaminant testing, especially for wild-collected material.
Is Seaweed COSMOS-approved?
It is generally permitted in COSMOS-natural and COSMOS-organic products when obtained as a natural raw material or by approved extraction methods, with organic status dependent on certified sourcing. It fits Green Chemistry best when processed with water, glycerin, or ethanol and when suppliers document renewable sourcing and biodegradability.
How does Seaweed work chemically?
This material is a complex mixture rather than a single molecule, typically rich in anionic polysaccharides, proteins, minerals, and phenolic compounds that can contribute water binding, film formation, and antioxidant activity. Use levels are commonly 0.1 to 5% for extracts, and performance depends on extraction solvent, salt load, preservation, and formula pH, with polymeric fractions most stable in mildly acidic to neutral systems.
Last updated 2026-05-14