Montmorillonite Clay ●
TL;DR. This ingredient is primarily an absorbent and texture modifier, used to take up oil, add slip, create opacity, and thicken or suspend particles in masks, cleansers, powders, and some emulsions.
What does Montmorillonite Clay do in a cosmetic formula?
This ingredient is primarily an absorbent and texture modifier, used to take up oil, add slip, create opacity, and thicken or suspend particles in masks, cleansers, powders, and some emulsions.
Is Montmorillonite Clay clean?
From a clean-beauty perspective, it is generally well tolerated on skin and has no major restricted-list friction. The main quality considerations are fine-powder inhalation exposure during manufacturing or loose-powder use, plus testing for trace metals and respirable crystalline silica.
Is Montmorillonite Clay sustainable?
This material is mined, so its footprint is tied to land disturbance, extraction, milling, transport, and supplier practices. It is inorganic and does not biodegrade in the usual sense, but it is not associated with bioaccumulation and is environmentally stable.
Is Montmorillonite Clay COSMOS-approved?
It is permitted in COSMOS-natural and can be used in COSMOS-organic formulas, though it does not count as organic agricultural content. Its Green Chemistry fit is strongest on low chemical processing and inertness, and weaker on renewability because it is a mined mineral.
How does Montmorillonite Clay work chemically?
This material is a layered aluminosilicate mineral with expandable sheets and exchangeable interlayer cations, giving it high surface area, swelling behavior, and adsorption capacity. Typical use can range from about 0.5 to 5% for suspension or viscosity support and much higher in rinse-off masks, and it can bind cationic ingredients or some preservatives, so compatibility testing matters.
Last updated 2026-05-13