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Any hair dye with 20 volume developer or higher is permanent.
No probably not.
The volume of the developer simply tells you how many levels it will lift your hair so since you are using 30 volume, it will lift your natural color 3 levels higher to help the permanent color show better. The volume/color ratio is 1:1 which means however many oz. of haircolor you use, you put the same number of oz of developer. For example: 2oz permanent haircolor: 2oz of developer I hope this helps you! Source: I am a cosmetologist
It won't make it 30. The way developer works is 10 is no lift deposit only and makes hair semi permanent. 20 is 7-10 shades of lift with deposit and makes hair colour permanent. You have to buy 30 volume developer from a sallys beauty supply but 30 is very dangerous for the hair it can damage it severly I recommend sticking to just 20 volume
no, manufacturers instrustions tells you not to
Yes, this will work, but I recommend using 20 volume developer instead of 30 volume and watch the hair closely.
Yes. The developer needs to be mixed with a color first, such as a permanent color, or hair lightener. I don't recommend you just adding the developer directly to your hair by itself, although I don't think much will happen since it's hydrogen peroxide or it will lighten your hair slightly. Practice precautions.
Equal parts of 10V. Developer + 20V. Developer= 15 Volume Developer
Equal parts of 30 volume + 40 volume developers= 35 Volume Developer.
Equal parts of 5 volume developer + 15 volume will yield approximately 10 volume.
If the red color is permanent, mix equal parts developer + color.
Redken Camo Color Developer is 20 volume.