These are the most common allergens in hair dyes

(Image: Pixabay CC0) Hair dyes can easily trigger contact allergies. In a large-scale project, the Information Network of Dermatological Clinics (IVDK) has investigated which substances are most frequently involved. The importance of hair dyes for allergies is thus evident. Safety at the workplace and product safety should be improved, the scientists involved now wrote in their study . Wolfgang Uter, epidemiologist at the University of Erlangen-Nuremberg, and co-authors of the study, among them Kränke Birger from the Department of Dermatology and Venerology at Med Uni Graz, now wrote in the scientific journal "Contact Dermititis": "Hair cosmetic products contain several, sometimes strong contact allergens including preservatives. Hairdressers* often have hand dermatitis, consumers* (customers as well as self-users* at home) can also develop severe dermatitis of the scalp or face." Long study period. To find out the most common causes of this, the experts* analyzed the results of skin patch tests and clinical information from people professionally in contact with hair dyes and from consumers* in the period between the beginning of 2013 and the end of 2020.