You may also use a 40 volume developer when you want to remove or change hair you’ve previously dyed.Ĥ0 vol is excellent for eliminating semi-permanent hair dyes. The darker and coarser the hair, the more challenging it is to lighten. The high volume isn’t recommended for those with naturally blonde hair color but works wonders for those with dark hair.
You can use a 40 vol developer on any hair as long as you do so carefully. This lifting is what lightens your hair.ĭevelopers also help hair dye penetrate the hair shaft, causing the color to last longer and to be more vibrant. The higher the volume, the more the cuticle is lifted. You can mix it with bleach to create a platinum blonde or with permanent hair color to lighten your hair while dyeing.ĭevelopers work by lifting the cuticle layer of your hair.
40 volume developer is a lightening agent that contains 12% peroxide.
