• Formulating

  Should hair dye be applied before or after thioglycolic acid straightening?

  Posted by Gunther on July 11, 2019 at 9:31 pm

  For a product line that contains both,
  should hair dye be applied after thioglycolic acid containing hair straightening, in order to prevent the peroxide in the straigthener neutralization from bleaching the recently applied dye, right?

  Can hair dye and straightening be combined in a single formulation?
  Has this ever been attempted?

  Fekher replied 4 years, 9 months ago 2 Members · 1 Reply

  • hair-dye
  • hair-straightening
  • peroxide
• 1 Reply

• 

  Fekher

  Member

  July 13, 2019 at 9:14 am

  @Gunther from what i learnt acid is applied after hair  dye cause acid solution close hair fiber.

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