A novel polymer anti-irritant barrier film for cosmetics
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