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| How do you avoid pink discoloration of cosmetic/personal care products after adding Tenox TBHQ? |
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| Some discoloration may occur with Tenox TBHQ (tertiary butylhydroquinone) at an alkaline pH or in the presence of proteins and sodium salts. Specifically, Tenox TBHQ forms colored complexes with amines in fatty acid/amine emulsifier systems at alkaline pH. Therefore, to prevent discoloration of Tenox TBHQ, we suggest neutralizing acids with amines to a pH of 7 or less.
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