Just wondering what normal procedure is for for HD brown patch testing? I've never had them done but I just got the patch test which involved a lot of dye being out on my skin and then being told not to wipe it off for 24 hours. When I go for my hair it's usually a small blob, then they wipe it off within 15 minutes and I'm told to keep an eye on the area for 24 hours. But with this the dye is still thick on my skin, not wiped off at all?! Is this normal? Wont I be left with a huge colour stain?