C Symanzik1, C Skudlik1,2, S M John1,2. 1. Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Osnabrück, Germany. 2. Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm), University of Osnabrück, Osnabrück, Germany.
Abstract
BACKGROUND: Nickel release from some metal tools in the hairdressing trade has been sporadically evidenced, whereas data about cobalt release from metal tools in the hairdressing trade are lacking. OBJECTIVES: To screen metal tools for nickel and cobalt release and to estimate the prevalence of nickel allergy and cobalt allergy in the German hairdressing trade. METHODS: Four hundred seventy-five metal tools in the hairdressing trade were tested in three North German states with a nickel spot test for nickel release and with a cobalt spot test for cobalt release. Seventy hairdressers were surveyed with a standardized questionnaire to collect data about the tested metal tools as well as the prevalence of nickel allergy and cobalt allergy. RESULTS: One hundred thirty-one of 475 metal tools (27.6%) - 60 of 60 hair clips (100%), five of five crochet hooks (100%), 24 of 40 tweezers (60.0%), 33 of 75 sectioning clips (44.0%), five of 32 straight razors (15.6%), and four of 45 tail combs (8.9%) - released nickel and 10 of 475 metal tools (2.1%) - three of 40 tweezers (7.5%), four of 60 hair clips (6.7%), one of 32 straight razors (3.1%), and two of 75 sectioning clips (2.7%) - released cobalt. Eight of 63 female hairdressers (12.7%) suffered from nickel allergy and two of 63 female hairdressers (3.2%) suffered from cobalt allergy. CONCLUSIONS: Metal tools in the German hairdressing trade - with which a prolonged skin contact is intended - release nickel and cobalt in allergologically relevant amounts and thus should be taken into account as occupational sources of exposure to nickel and cobalt.
BACKGROUND:Nickel release from some metal tools in the hairdressing trade has been sporadically evidenced, whereas data about cobalt release from metal tools in the hairdressing trade are lacking. OBJECTIVES: To screen metal tools for nickel and cobalt release and to estimate the prevalence of nickelallergy and cobaltallergy in the German hairdressing trade. METHODS: Four hundred seventy-five metal tools in the hairdressing trade were tested in three North German states with a nickel spot test for nickel release and with a cobalt spot test for cobalt release. Seventy hairdressers were surveyed with a standardized questionnaire to collect data about the tested metal tools as well as the prevalence of nickelallergy and cobaltallergy. RESULTS: One hundred thirty-one of 475 metal tools (27.6%) - 60 of 60 hair clips (100%), five of five crochet hooks (100%), 24 of 40 tweezers (60.0%), 33 of 75 sectioning clips (44.0%), five of 32 straight razors (15.6%), and four of 45 tail combs (8.9%) - released nickel and 10 of 475 metal tools (2.1%) - three of 40 tweezers (7.5%), four of 60 hair clips (6.7%), one of 32 straight razors (3.1%), and two of 75 sectioning clips (2.7%) - released cobalt. Eight of 63 female hairdressers (12.7%) suffered from nickelallergy and two of 63 female hairdressers (3.2%) suffered from cobaltallergy. CONCLUSIONS:Metal tools in the German hairdressing trade - with which a prolonged skin contact is intended - release nickel and cobalt in allergologically relevant amounts and thus should be taken into account as occupational sources of exposure to nickel and cobalt.