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Specification
Kaolin's absorbent properties are useful for reducing skin's surface oil in facial masks.
Kaolin can be drying for some skin types, especially if used in very high amounts.
Formulators can pair kaolin with hydrating/soothing ingredients to offset its absorbency and prevent dryness.
Kaolin can function as an anticaking agent, bulking agent, opacifying agent, and abrasive agent.
Kaolin is primarily composed of kaolinite, a hydrated aluminum silicate.
Kaolin is extracted from kaolinized granite by washing it out with powerful water hoses. It is then pumped to a separation plant where sand and mica are removed. The purified clay is filtered when wet and then dried into a fine powder through milling.
Kaolin has a long history of safe use in cosmetics and is generally recognized as safe by the US FDA as a direct food additive.
In skin care, kaolin can draw excess oil from the skin, exfoliate it, and leave the surface clean and smooth. It also has soothing properties to reduce redness and irritation.
In hair care, kaolin helps detoxify the scalp by lifting dirt and impurities, leaving it clean and healthy. It also provides necessary minerals to the scalp.
Kaolin is present in cosmetics to give them a matte appearance, prevent shine, increase the shelf life of products as a preservative, and help makeup stay intact under humid conditions and perspiration.