Hi Yoli, I was found by testing to be very allergic to hair color with PPD in it. I cried for 3 weeks from the itching all over my body and head, the itching was so bad I actually bruised and bled from the allergy! I refuse to go white, so I tried Eco Color for the first time 1 week ago. I am so thrilled that I can finally color my hair again without itching! Hope this helps you. Marilyn