What does demi-permanent hair dye do to the roots?
Md Ariful Islam
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এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
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পিজিটি(মেডিসিন)
Demi-permanent hair color molecules get under the outer cuticle of the hair shaft but, unlike permanent dyes, they don’t penetrate the deeper cortex.
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