Home Cosmetic Science Talk Formulating Colour changing product

  • bil7

    January 13, 2020 at 2:34 pm

    Yes firstly you adjust to ph varies colour change
    And add little sodium metabisulfite 
    And  BHT 
    Will surely works .

  • EVchem

    January 13, 2020 at 6:09 pm

    I think you are combining two different ideas. There are some pigments that would be UV sensitive (so color changing in the sun) or thermal. The heat from your body would likely change the product color before the heat from the sun would.
    There are also products that change color based on pH like bil says. Those can be used on skin if done carefully, I’m not sure about the others.

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