I have completely black hair, and I want to dip-dye it dark purple. I have virgin hair, and I'm unsure if I should go for 20 or 30 volume developer. What are your thoughts?
Md Ariful Islam
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এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
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Because your hair is so dark, using a purple dye alone may not lift your existing color. So you may need to bleach your hair first, using 20 volume developer.
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