Ornithine ●
TL;DR. This ingredient is primarily used as a skin-conditioning and humectant-like additive, helping support a hydrated feel in water-based skin care formulas. It may also contribute mild buffering because of its amino acid chemistry.
What does Ornithine do in a cosmetic formula?
This ingredient is primarily used as a skin-conditioning and humectant-like additive, helping support a hydrated feel in water-based skin care formulas. It may also contribute mild buffering because of its amino acid chemistry.
Is Ornithine clean?
This ingredient is generally well-tolerated, is not a common fragrance allergen, and has little clean-standard friction. DARE sees it as a low-concern ingredient when purity and sourcing documentation are clear.
Is Ornithine sustainable?
This material is typically made by fermentation or other amino-acid manufacturing routes, with fermentation offering a stronger renewable-sourcing profile. It is expected to be readily biodegradable and has low persistence concerns in rinse-off or leave-on use.
Is Ornithine COSMOS-approved?
It is generally compatible with COSMOS natural and organic standards when produced through approved fermentation or other compliant natural-origin routes. From a Green Chemistry perspective, it scores well when renewable feedstocks, aqueous processing, and biodegradable outputs are documented.
How does Ornithine work chemically?
The molecule is a small, highly polar, basic amino acid with amine and carboxyl groups, which makes it highly water-soluble and suited to aqueous phases. It is typically used at low levels, often around 0.01 to 1% in leave-on skin care, and is best formulated in moderate-pH systems with standard preservation.
Last updated 2026-05-13