Hausen B M, Hessling C
Department of Dermatology, University Hospital, Hamburg, FRG.
Contact Dermatitis. 1990 Aug;23(2):90-5. doi: 10.1111/j.1600-0536.1990.tb03229.x.
3 minor resin acids and 7 commercial modified-colophony products of different origins were studied by experimental sensitization by means of a modified FCA method. All 3 resin acids were almost negative. The commercial products gave different results. While the maleic-modified product of Greek origin showed a strong sensitizing power, the fumaric-modified, terpene-phenol-modified and a disproportioned rosin were only moderate. A remarkable difference was obtained with the Swedish and Finnish tall oil rosins, which, in contrast to the previously studied French product, exhibited only a weak sensitizing capacity.
