RE: RE: allergy to cobalt dichloride / ingredient in brown hair dyes
EcoColors doesn't contain this ingredient, but you could have an allergy to some other ingredient, so we always recommend an allergy test. Allergies aren't to be taken lightly. Some allergies may develop over time with repeated exposure. Allergies can even build over a week after application. Just because EcoColors is p phenylenediamine (ppd) free, doesn't mean you won't react. There are other oxidative dyes present in nontoxic amounts that some individuals may be allergic to. We recommend that you have a medical plan in place with your physician in case you develop an allergy.