Switching between EcoColors and normal Permanent Color?
Hi! I am an avid haircolorist, as I do mine as well as other peoples, and I am a student in Cosmetology. Not much had been explained about PPD to us, except it's a cause of allergic reactions. Does switching back and forth from your products with low amounts of ppd to normal colors make any difference at all? I haven't had an allergic reaction to haircolor yet, and I really don't want to have one. Do the amounts of PPD in your products that are of a darker color vary to those of a lighter color? Thanks.:)
