10.5% WATER/AQUA/EAU ●
TL;DR. At 10.5%, this ingredient functions as a solvent and diluent, helping dissolve compatible actives, salts, humectants, and preservatives while adjusting product viscosity and feel.
What does 10.5% WATER/AQUA/EAU do in a cosmetic formula?
At 10.5%, this ingredient functions as a solvent and diluent, helping dissolve compatible actives, salts, humectants, and preservatives while adjusting product viscosity and feel.
Is 10.5% WATER/AQUA/EAU clean?
It is broadly accepted across clean-beauty frameworks and is generally well tolerated. Clean-standard concerns usually relate to product preservation and purity specifications rather than the ingredient itself.
Is 10.5% WATER/AQUA/EAU sustainable?
This material is typically purified from local supply sources and has low environmental persistence concerns. Sustainability considerations are mainly tied to purification energy, responsible use, and manufacturing stewardship.
Is 10.5% WATER/AQUA/EAU COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic standards, although it does not contribute to organic content calculations. From a Green Chemistry view, it is a benign solvent with low flammability, broad compatibility, and minimal residue burden.
How does 10.5% WATER/AQUA/EAU work chemically?
The molecule is small, highly polar, and capable of hydrogen bonding, which makes it useful for dissolving ionic and polar materials in cosmetic systems. It is chemically stable across normal cosmetic pH ranges, but it supports microbial growth, so formulas containing it usually need an effective preservation system.
Last updated 2026-08-16