10 Vs 20 Developer. What is the difference between 10 and 20 volume developer? See answer (1) best answer. 10 volume is if you want to go dark with color but with bleach 10 vol gives you one level of lift but if it seems slow to you use 20 volume, never use 30 vol or 40 vol on scalp it will irritate it. 30vol developer is ideal for lifting 3 levels using permanent hair color depending on the texture and natural depth of the hair.
What’s the difference between 10 volume, 20 volume, 6%, 9% peroxide? Developer comes in different strengths, the common ones being 10 volume, 20 volume, 30 volume and 40 volume. It’s possible to buy peroxide in stronger concentrations but they’re much too strong to use on hair and should be avoided. Developer strength is sometimes. Hair developer has several degrees to which you can lighten or darken your hair. The weakest one is 10 volume or 3% peroxide developer and normally, 3% in the developer helps to achieve 1 degree of lightening. So, with 6% peroxide, colorists can get 2 degrees of lightening. In other words, the developer lifts your hair color by one or two. The 20 volume developer opens the hair cuticle but unlike 10 volume, it provides lifting of the hair by one to two levels.