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Contact allergy to cocamidopropyl betaine
A C de Groot1, H B van der Walle, J W Weyland
1Department of Dermatology, Carolus-Liduina Zickenhuis, Hertogenbosch, The Netherlands.
Contact Dermatitis
|December 1, 1995
Abstract:
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.