I would like to find out more about the link between this allergy and haircolor. I have been doing hair for 15 years and found out I was allergic to cobalt dichloride 2 years ago. It scares the wits out of me! If anyone else has more info about this allergy I would appreciate any offered. I have been using ecocolor for 3 years and love it, but still hope we could eliminate this trouble and allergen for others.