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Starch gelling agent question (hydroxypropyl vs Hydrolyzed)
This formula calls for hydroxypropyl starch phosphate as 1% of a facial cream. I only have Hydrolyzed corn starch (also have regular corn starch and hydroxypropyl methyl cellulose). Are they interchangeable in this case? Which would be best to use if I don’t have the hydroxypropyl? Thanks!
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1 Reply
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Unfortunately, no. Hydroxypropyl starch phosphate has a polar group (phosphate), which gives the molecule surace active properties. That’s why is not only a stabilizer/rheology modifier, but has some emulsifying properties.
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