yes! If you're using permanent color, you can lift up to 2 levels without having to pre lighten.
20 vol is what ya need for color it has "regular" lift just enough to deposit color...30 vol is "extra" or high lift for a more extreme lightening. Be very careful using 30 vol on scalp it is very strong stuff :)
A Medium Brown is about a level 4 and ash is known as "A." Your local beauty supply store carries 4A hair color in either permanent, demi permanent, or semi permanent.
Yes you can. Highlight is a term for lightening the hair so you will have to use a lightning product to achieve the best results as permanent color will not lift the semi permanent color to the right level, but be sure to read the instructions and apply properly.
Demi permanent hair color is a type of hair dye that contains a low level of ammonia and deposits color onto the hair cuticle without penetrating the cortex. It lasts longer than semi-permanent color but not as long as permanent color, typically lasting up to 24 washes. It is a good option for those looking to enhance their natural hair color or cover up grays without committing to a permanent change.
You cannot go lighter on colored hair with more color. If your hair has no permanent color on it, you use high lift developer. 10 volume for every level lighter you want to go. If there is color on it, you'd have to lighten your hair with bleach, then color it. Your best bet is to get it done professionally.
Developer is used with professional color to adjust level of color desired. For example, black hair could be described as level 1, adding blonde highlights would require a 40 volume developer to lift the color of your hair 4 shade levels.
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.
A 10 volume creme developer is a type of hydrogen peroxide solution used in hair coloring or bleaching to lift the hair color by one level. It is a gentle developer that is suitable for deposit-only color, toning, or color correction with minimal lifting. The "volume" refers to the strength or concentration of the peroxide in the developer.
I have some permanent teeth.
It will be gone, for the most part, in 6-8 weeks. Some will remain on the ends, but at the roots there won't be color.
Get a liquid volume measuring jug, fill it to a fixed level with water and make a note of the level = level A. Next drop in the solid object and make a note of the new level = level B.Subtract level A from level B and the difference is the volume of the solid object.
If the target color is only one level lighter, use 20 volume. If it's more than one level, use 30 volume. 40 volume is generally not recommended and should only be used by experienced professional hair colorists.