Home Cosmetic Science Talk Formulating Hair Purple Shampoo Tips and Advice?

  • Purple Shampoo Tips and Advice?

    Posted by MikaylaMarie on September 2, 2020 at 11:28 pm

    I make shampoo and conditioner bars, and I finally found a few formulas that I love.

    As a blonde, I would love them even more if I could replace my purple shampoo and purple conditioner. So I went ahead and ordered some Violet No. 2 External D&C.

    I have been trying to do some research and am having trouble finding any information on how to tweak a regular shampoo formula into a purple shampoo. (I’d like to do conditioner too!) I did read that I probably won’t need more than .3% in the formula for it to perform how I want.

    Do I just go ahead and add the violet into my batch? Does it need to be added at a certain temperature? My shampoo bars are pH balanced to around 5.5-6, is that ok?

    If you have any general tips or advice on formulating a purple shampoo and/or conditioner, please share. I greatly appreciate any advice - thanks!

    Colorfuljulie replied 3 years, 9 months ago 2 Members · 1 Reply
  • 1 Reply
  • Colorfuljulie

    September 6, 2020 at 12:38 am

    In my past experience I have added my colorant into my water phase and proceeded as usual with my formula. I would start with 0.1% first and go up from there. 0.3% could be a little high depending on the porosity of the hair it’s applied to. That much is good for very brassy hair, but if the ends are very processed they will over-deposit the tone. Then the ends look violet and the gold midshaft looks even brassier. It’s better to formulate with less because the average consumer won’t apply it only to the areas that need toning. Hope this helps!

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