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  • Formulating

    Black Shampoo / Blue Shampoo

    Posted by Anonymous on December 5, 2019 at 10:35 pm
    Hi,

    I have a question to ask,

    What direct dye do I put into a color shampoo for it to be black ?
    And for it to be blue?
    I have made violet shampoo using acid violet 43, and i´m wondering what is de colorant to use to obtain black shampoo and blue shampoo.

    Thanks in advance

    Mariana
    Anonymous replied 5 years, 4 months ago 1 Member · 2 Replies
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