Aluminium Hydroxide ●
TL;DR. This ingredient is mainly used as an opacifier, absorbent, viscosity-supporting mineral, and surface treatment for pigments and UV-filter particles. It helps improve dispersion, reduce chalkiness, and support a smoother feel in color cosmetics, sunscreens, and powders.
What does Aluminium Hydroxide do in a cosmetic formula?
This ingredient is mainly used as an opacifier, absorbent, viscosity-supporting mineral, and surface treatment for pigments and UV-filter particles. It helps improve dispersion, reduce chalkiness, and support a smoother feel in color cosmetics, sunscreens, and powders.
Is Aluminium Hydroxide clean?
From a clean-beauty perspective, this ingredient is generally low-irritation and has little skin penetration because it is highly insoluble. It may draw shopper confusion with other metal-based actives, but it is not a typical restricted-list issue in color cosmetics or mineral sunscreens.
Is Aluminium Hydroxide sustainable?
This material is mineral-derived, so it is not renewable in the agricultural sense and carries the usual extraction and refining footprint. It is inorganic and not biodegradable, but it is also not considered a bioaccumulative organic pollutant.
Is Aluminium Hydroxide COSMOS-approved?
It is generally compatible with COSMOS-natural and COSMOS-organic formulations when used as an allowed mineral-origin ingredient or pigment coating. Its Green Chemistry profile is strongest on low reactivity and low bioavailability, and weaker on renewable sourcing.
How does Aluminium Hydroxide work chemically?
The molecule is an inorganic, amphoteric, poorly soluble mineral compound built from trivalent metal centers and hydroxyl groups, which explains its low mobility in finished formulas. It is stable across typical cosmetic pH ranges, can interact with acids or strong bases, and is often used as a pigment coating or powder-phase additive rather than a dissolved active.
Last updated 2026-05-14