Which concentration do I use?

I have light brown to a almost white color on my head right now.(I know, lots of variety) I want to lighten my hair to white and I found a product that will do that, but I have to mix it with either 20 volume developer or 30 olume. Which should I use? (I know some of you will think this is a bad idea, please don’t waste my time or yours telling me not to do this) Thanks.

Answer #1

my friend did that. she used 20 and now her hair looks beautiful :)

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