Hair Bleach Kit volume

Question Description

Can you help me understand this question?

What's the difference between a Hair Bleach Kit volume 40 & a volume 30, & I have dirty blonde hair, which volume should I use?

I plan on bleaching all of my hair by the way, I'm not just  doing highlights.


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Final Answer

40 volume is stronger and it works faster than the 30 volume, but it also damages hair a lot more easily. if your trying to do highlights I would go with the 30, but if you're doing all over color I would go with the 40..and make sure your hair is a very pale yellow before you wash the bleach out or it will be orange.
The developers. 40 volume is a lot stronger, and processes faster then 30. And I wouldn't use 40 volume, unless you have colored Black hair.

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