Ever users of permanent hair dyes had no significant increases in risk of solid cancers (n=20 805, excluding non-melanoma skin cancers; hazard ratio 0.98, 95% confidence interval 0.96 to 1.01) or hematopoietic cancers overall (n=1807; 1.00, 0.91 to 1.10) compared with non-users. Additionally, ever users did not have an increased risk of most specific cancers (cutaneous… Continue reading Personal use of permanent hair #dyes and #cancer risk and mortality in US women: prospective cohort study
Tag: hair-dye
#Skin barrier damage after exposure to para-phenylenediamine
p-Phenylenediamine (#PPD) is a strong contact allergen used in hair dye known to cause allergic contact dermatitis (ACD). Both private and occupational exposure to PPD is frequent, but the effect of PPD exposure in non-allergic occupational exposed individuals is unknown.. ..RNA-sequencing demonstrated down-regulation of tight junction (TJ) and stratum corneum (SC) proteins in skin of… Continue reading #Skin barrier damage after exposure to para-phenylenediamine
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