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Shampoo with 0.1% formalin turned yellow. Why?
I did make a sample of shampoo with 0.1% formalin. After few days it turned a bit yellowish. The same formula without formalin didn’t turn yellow. does it mean something bad happened and caused yellow color or it is normal for formalin in shampoo to turn yellow?
Ingredients
Water, SLES, SLS, CAPB, APG, cationic guar, Amodimethicone emulsion, NACL, citric acid, fragrance.
pH 4.5
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