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Contact Dermatitis. 1995 Dec;33(6):419-22.

Contact allergy to cocamidopropyl betaine.

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  • 1Department of Dermatology, Carolus-Liduina Zickenhuis, Hertogenbosch, The Netherlands.


Cocamidopropyl betaine is an amphoteric surfactant used increasingly in cosmetic products. We describe 20 cases of cosmetic allergy to cocamidopropyl betaine; all were caused by shampoo or shower gel. 8 patients were hairdressers, who had occupational allergic contact dermatitis from shampoos. We recommend patch testing cocamidopropyl betaine 1% aq. routinely in hairdressers with dermatitis of the hands, and in all patients suspected of suffering from cosmetic allergy.

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