• Hair

  Hair colour - Basic Red Dye issue

  Posted by Anonymous on March 2, 2018 at 12:10 pm

  Good morning,
  I am working at the moment on the semi-permanent hair colour using Basic Red 76. Depending on the formulation, “red dots” appears into the product after a couple of days at RT and/or 4C or even sometimes after 24h. Under the microscope those red dots look like crystals. Did anyone encounter this type of formula incompatibility? I am trying to remove each ingredient one by one, but so far not much luck. Thank you!

  ariepfadli replied 3 years, 2 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Bill_Toge

  Member

  March 2, 2018 at 3:28 pm

  Basic Red 76 is poorly soluble in water; what else have you got in the formula?

• 

  ariepfadli

  Member

  October 5, 2021 at 10:45 am

  Try add benzyl alcohol and another oxygenated solvent

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