Citrulline Hcl ●
TL;DR. This ingredient is used mainly as a skin-conditioning and humectant support material, helping bind water in the formula and on the skin surface. It may also appear in hair and scalp products for conditioning claims.
What does Citrulline Hcl do in a cosmetic formula?
This ingredient is used mainly as a skin-conditioning and humectant support material, helping bind water in the formula and on the skin surface. It may also appear in hair and scalp products for conditioning claims.
Is Citrulline Hcl clean?
It has a low sensitization profile and is not a common fragrance allergen or restricted-list concern in clean beauty frameworks. The main review point is source and processing documentation, not routine skin tolerance.
Is Citrulline Hcl sustainable?
This material is typically made from bio-based fermentation or amino-acid processing, then converted to a stable salt form. It is expected to be readily biodegradable and does not raise known persistence or bioaccumulation concerns.
Is Citrulline Hcl COSMOS-approved?
It can align with COSMOS-natural when made from permitted feedstocks and approved processing steps, while organic certification depends on the agricultural status of the source material. From a Green Chemistry view, fermentation-based sourcing, water solubility, and biodegradability are favorable.
How does Citrulline Hcl work chemically?
The molecule is a highly water-soluble amino-acid-type salt with ionic character, so it is used in the water phase and is not oil soluble. It is generally stable across the mildly acidic to neutral pH range common in skin care, and formulators usually pair it with other humectants, electrolytes, and buffers rather than relying on it as a standalone active.
Last updated 2026-09-01