Water/Eau ●
TL;DR. This ingredient is the primary solvent and diluent in beauty and personal care formulas. It dissolves salts, humectants, preservatives, and many actives, and it sets the base phase for gels, emulsions, sprays, and cleansers.
What does Water/Eau do in a cosmetic formula?
This ingredient is the primary solvent and diluent in beauty and personal care formulas. It dissolves salts, humectants, preservatives, and many actives, and it sets the base phase for gels, emulsions, sprays, and cleansers.
Is Water/Eau clean?
This ingredient is well-tolerated and unproblematic in clean-beauty frameworks, with no allergen or restricted-list concern. Quality is mainly about purification and microbiological control.
Is Water/Eau sustainable?
This material is usually sourced from local municipal or well supplies rather than petrochemical synthesis. It does not biodegrade in the usual organic-molecule sense, but it is nonpersistent as a contaminant and its footprint is driven by purification, transport, and regional scarcity.
Is Water/Eau COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic standards, although it does not count as organic content. Its Green Chemistry profile is strong when purified efficiently and sourced locally, since it is a benign solvent with no solvent-residue issue.
How does Water/Eau work chemically?
The molecule is small and highly polar, with hydrogen bonding that makes it an efficient medium for salts, glycols, acids, bases, and many botanical extracts. It is stable across normal cosmetic pH ranges, but formulas built around it need preservation because available moisture supports microbial growth.
Last updated 2026-05-13