40 VOL ON DARK BROWN

ilikeyourface wrote: ........what colour will it turn??

What is your natural haircolor? Are you trying to go lighter? if so how much lighter? If you are going darker how much darker?(like how many levels darker or lighter?)

There are some general rules to keep in mind when coloring hair.

Developers come in 10, 20, 30, & 40 Volume. The higher the volume the stronger the lifting action is. Typically 10 volume is used primarily to tone the hair color. 20 volume will allow you to achieve one level lighter. 30 Volume 2 levels lighter, 40 volume 3 levels lighter and many color lines have blonding cream which allows you to gain 1/2 - 1 level more of additional lift. Semi-permanent and Demi-Permanent hair color will not lift the natural haircolor lighter. If you are going 2 levels darker or more typically you need to fill the hair with a filler to add the underlying pigment back into the hair strand so the color you are coloring your hair will take. If you don't take this step when going darker your hair could turn orange if you are blonde and trying to go back to your natural brown color . If you are going darker 20 volume is sufficient to use as you are not lifting the color lighter. The only times 30 & 40 Volume are used is if you are lightening the haircolor.

Color doesn't lighten already artificially colored hair. If your hair is previously colored and you want to go lighter the only way to achieve that is thru bleaching or lightening your hair. It's done with bleach! I'm not going to sugar coat it for you by calling it a lightener it's bleach. It's important to be extremely careful when lightening hair as you don't want to lift it past what is called the "PALE YELLOW" stage as permanent damage and overprocessing will occur and your hair will be fried.

Haircoloring is best left to the professionals. I'll be happy to answer any other questions you might have.

G'luck