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Quaternium 18 Hectorite

* A suspending agent


Quaterniuum 18 Hectorite is a mixture of quaternary ammonium chloride salts, reacted with clays, according to It is used as a suspending and viscosity controlling agent in cosmetics and personal care products, and also has emulsifying properties. It is seen in formulas for a variety of products, including lipstick, face makeup, eye shadows, rouge, mascara, skin gels, skin creams, skin lotions, hair care products, and cleaners (

Safety Measures/Side Effects:

The Cosmetics Database finds Quaternium 18 Hectorite to be a 99% safe ingredient, and it is CIR approved for use. According to the International Journal of Toxicology article entitled "Final Report on the Safety Assessment of Quaternium-18, Quaternium-18 Hectorite, and Quaternium-18 Bentonite," it is a poorly absorbed compound that exhibits little to no toxic effects, and is a nonirritating and nonsensitizing agent, and "does not present adverse phototoxic or photo-allergenic effects."

Recommended Products w/ Quaternium 18 Hectorite:

Dermacia Lycogel Melt Resistant Foundation
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