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A novel polymer anti-irritant barrier film for cosmetics

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Currently, we encounter many chemical substances that can affect the skin through contact in our daily life. To keep these irritants away from us, it is very effective to create a dermal barrier film that can prevent penetration of irritants into the skin. For the purpose, we evaluated the permeation characteristics of currently available film-forming polymers, but almost all were found ineffective as barriers. Our investigation led us to fluoroalkylacrylate–polyglycolmethacrylate–alkylmethacrylate–copolymer (F–copolymer), a new acrylic copolymer. This polymer is soluble in water and can easily be incorporated into various cosmetic products. It consists of hydrophilic and lipophilic groups with fluorine units, and forms a durable, continuous film that is resistant to both water and oil upon drying. Testing on human subjects has demonstrated F-copolymer's effectiveness in countering irritation caused by water-soluble materials, including methyl paraben, lactic acid, and oil-soluble materials, like butyl paraben and methyl saricylate.
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Document Type: Abstract

Publication date: August 1, 2004

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