PMID- 27633650 OWN - NLM STAT- MEDLINE DCOM- 20170418 LR - 20170418 IS - 1600-0536 (Electronic) IS - 0105-1873 (Linking) VI - 75 IP - 5 DP - 2016 Nov TI - Comparative sensitizing potencies of fragrances, preservatives, and hair dyes. PG - 265-275 LID - 10.1111/cod.12683 [doi] AB - The local lymph node assay (LLNA) is used for assessing sensitizing potential in hazard identification and risk assessment for regulatory purposes. Sensitizing potency on the basis of the LLNA is categorized into extreme (EC3 value of 0.2% to 2%). To compare the sensitizing potencies of fragrance substances, preservatives, and hair dye substances, which are skin sensitizers that frequently come into contact with the skin of consumers and workers, LLNA results and EC3 values for 72 fragrance substances, 25 preservatives and 107 hair dye substances were obtained from two published compilations of LLNA data and opinions by the Scientific Committee on Consumer Safety and its predecessors. The median EC3 values of fragrances (n = 61), preservatives (n = 19) and hair dyes (n = 59) were 5.9%, 0.9%, and 1.3%, respectively. The majority of sensitizing preservatives and hair dyes are thus strong or extreme sensitizers (EC3 value of