Purple Shampoo

Hello, does anyone know what the ph should be for making a purple shampoo? acidic or alkaline?
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Comments

  • PerryPerry Administrator, Professional Chemist
    Shampoos are generally acidic.
  • Just asking because I had success making purple conditioner, which is acidic, but not a shampoo, it is acidic too but it does not deposit the pigment.
  • It depends which colorant you’re using to deposit the color. If you’re using acid violet 43, you’ll need a specific grade. 
  • MarkBroussardMarkBroussard Member, Professional Chemist
    pH 5.6
    Chemist/Microbiologist formulating in the Organic & Naturals arena under ECOCert/Natural Products Assn/Whole Foods/National Organic Program guidelines focused skincare & haircare products. 

    See website for details www.desertinbloomcosmeticslab.com
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