Comment on Hair dye and chemical straightener use and breast cancer risk (2019)parentComments−karim793yAssuming that the application phase leads to permanence I don't really see the difference, yet I get your point. E.g. massaging the dye into the scalp vs a pro not going to deep into the roots.
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Assuming that the application phase leads to permanence I don't really see the difference, yet I get your point. E.g. massaging the dye into the scalp vs a pro not going to deep into the roots.