Water/Eau/Aqua ●
TL;DR. This ingredient is the primary solvent and diluent in most personal care formulas, dissolving polar ingredients and setting the product’s texture, spread, and concentration.
What does Water/Eau/Aqua do in a cosmetic formula?
This ingredient is the primary solvent and diluent in most personal care formulas, dissolving polar ingredients and setting the product’s texture, spread, and concentration.
Is Water/Eau/Aqua clean?
From a clean-beauty perspective, this ingredient is well tolerated, broadly accepted, and not a restricted-list concern. The main quality issue is purity, so cosmetic formulas typically use purified or deionized grades.
Is Water/Eau/Aqua sustainable?
This material is abundant, non-bioaccumulative, and not a persistence concern in the usual cosmetic-ingredient sense. Sustainability depends more on local scarcity, purification energy, manufacturing use, and wastewater controls than on the molecule itself.
Is Water/Eau/Aqua COSMOS-approved?
This ingredient is permitted under COSMOS-natural and COSMOS-organic standards, although it does not count as organic content. It aligns well with Green Chemistry as a benign solvent, with the caveat that responsible use and low-energy purification matter.
How does Water/Eau/Aqua work chemically?
This molecule is small, highly polar, and hydrogen-bonding, which helps it dissolve salts, humectants, botanical extracts, and many preservative systems. It is often the largest phase in emulsions, gels, and cleansers, commonly about 30% to 95%, and formulas containing it require appropriate preservation because it supports microbial growth.
Last updated 2026-05-13