![]() ![]() If using a 20 vol, mix one part of the 40 vol to every 6 parts (1:6 ratio). It is generally about 1 part of the developer to every 3 parts of bleach powder/cream (but this will vary depending on what you are making – it depends which volume of peroxide is required). – Mixing the developer into other products that are already mixed – Bleach Powder, Bleach Cream, Colour Developer (powder or cream)Ī 40-vol developer can be mixed into these products. Using a cream bleach powder, mix one part of 40 vol for every 9 parts cream (1:9 ratio, e.g., 1 part 40 vol to 9 parts cream). It can be left on the hair for over 20 vol, for up to an hour, but it will damage more hair.įor use with bleach powder or cream, mix one part of 40 vol with every three parts of emulsion or water (1:3 ratio, e.g., 1 part 40 vol to 3 parts water) (Baptista, 2009). It’s far more oxidizing than 20 vol and is used when hair needs to be lifted. How to Use 40 Volume DeveloperĪ 40 vol means 40-volume peroxide solution. The developer can also increase the color intensity and add tone.Īs you can imagine, this powerful developer is not recommended for use with virgin hair, as it may cause severe damage. In addition to lifting your hair four shades, the 40-volume developer will also deposit. This number should only be used when processing colored hair because it’s too strong for virgin hair and can cause severe damage. The 40-volume developer can lift lightened hair to four shades lighter than roots or natural color. This developer is also an excellent choice for toning hair. The developer lifts hair in four hues and can be used for blondes, especially high-lift colors. It is the most potent developer with the ability to make critical alterations. This standard ratio will lift natural levels 4 levels (2×2) if left on long enough due to its high peroxide content. The standard level for permanent hair color is 10 volumes, referring to the amount of hydrogen peroxide in the mixture. To mix, pour the entire developer bottle into the color paste or gel. It is unnecessary to dilute developers because they are already pre-mixed to an appropriate concentration level. The 10-volume developer should not be confused with toners, which are clear liquids used to alter the shade of hair color without lightening it. ![]() The 10 developer is fit for self-use coloring. It is a standard oxidizing level for no-lift, permanent hair color. Let’s look at the 10 and 40-volume developers. In other words, a weaker developer needs only a short time, while a stronger developer needs more. The strength of the developer corresponds to the number of times you have to leave it on your hair before rinsing it out. Volume is indicated with a number attached to the term “volume.”Īs you would expect, developers with lower numbers are weaker, and those with higher numbers are stronger. The developer has the function of allowing penetration of lighter hair.ĭevelopers have different volumes, which represent how strong they are. If your hair is naturally dark, it will take on more dye than hair that is light. Hair can be bleached, but if you use permanent hair colorant instead of bleach, then the developer has the function of opening up the cuticle so that the color can penetrate. A hair colorant developer, usually in the form of a solution, comes into contact with your hair to help it take on dye. ![]()
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