vividamnesia
Well-Known Member
6% developer is 20 Volume which gives 2-2.5 levels of lift or is used for stubborn grey coverage. A 10 volume=3% which is basically "deposit only" used for going darker & toning. If your client is a lv.7-8 & you want a lv.6, you would want to use a 10v developer....the 20v developer with a lv.6-7 on 7-8 hair would lift & deposit oddly & the 1/2-1" from root is the "hot zone" where heat leaves the head which processes hair more aggressively creating a lighter band . 10v & lv.6-7 would have yielded a more accurate outcome....Remember when going darker, a lower V.developer should be used as you need deposit only without the lift.:wink2: