volume for hair dye
It depends on what you are trying to achieve. If you're going darker, you should use 10 developer. 20 – 40 developer can be used to lift 1-4 levels. 20 ...
It depends on what you are trying to achieve. If you're going darker, you should use 10 developer. 20 – 40 developer can be used to lift 1-4 levels. 20 ...
