If you apply the dye throughout your hair without actually ... “So, I always recommend doing a small color patch in the back of the hair near the occipital bone, just to see what the color ...

Bergamy-Rosa recommends shades that are one to two levels lighter than your natural color to cover budding grays. “This can ...

ACDS tapped toluene-2,5-diamine sulfate for its dual nature as both an allergen and an alternative to other compounds.

Methods: A retrospective analysis of patch-test results since October 2006 was done and yielded 28 patients allergic to PPD who were also tested with a hair dye series. From January 2004 through ...