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How much 10 volume cream developer do you mix with 40 volume cream developer to make 20 volume?
Mixing 10 Volume developer and 40 volume developer will never make a 20 volume regardless of how much is mixed. In order to make a 20 volume, equal parts of 10 and 30 volumes will need to be mixed. Mixing 10 and 40 will make 30 volume.
What is the difference between 20 volume and 40 volume hair developer?
20 Volume (or 6%) developer will lift hair 2 levels and 40 Volume (or 12%) will lift hair 4 levels.
Do 10 an 30 developer make 20?
Yes, if mixed equally, a 10V + 30V= 20 Volume developer.
Can you make 15 volume developer using 30 volume and 40 volume?
NO. If you mix them in equal parts, that would give you 35 volume. To get 15 volume, mix equal parts of 10 and 20 volume.
Does 40 volume versas 20 volume make hair lighter?
40 volume developer is used for high lift shades and will lift hair 4 levels. 20 volume developer is also used for lifting but will only lift 2 levels. 20 volume is used as well when going darker or for gray coverage as it lifts and deposits at the same time.
