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Structure XL: Hydroxypropyl Starch Phosphate
A chemist has let me know that Structure XL is an alternative to Aristoflex AVC. Have you worked with Structure XL? What are your opinions on it?
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4 Replies
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they’re as different as chalk and cheese
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what do you mean by that? aristoflex avc is better compared to structure xl when it comes to overall skin feel?
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Means they are different in every regard. Different does not mean better or worse….just means different.
Haptics are 98% subjective. Test it.
I use Hydroxypropyl starch phosphate almost exclusively now, and I consider myself pretty picky. I was actually pushed into it…with my affinity to cationic co-emulsifiers and use of electrolytes.
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Slr. I see. thank you so much. I have another question though.
I have hydroxypropyl starch phosphate as well. I bought it from Myskinrecipes in Thailand. As far as I know, it is not necessary to alkalize it or acidify it for it to swell and build its internal network. But when I put it in water and mix it using low-medium shear, it still won’t gel. also, after stopping the mixing, after an hour, there will be like some sort of a phase separation - like the starch is separating from water. I only put 0.1% w/w NaCl to water to test its electrolyte resistance. Would you mind telling me if I am doing something wrong?
Process:
Water - q.s.
NaCl - 0.1 w/w
Hydroxypropyl Starch Phosphate - 4% w/w
>> Dissolve NaCl in water then add Hydroxypropyl Starch Phosphate. Mix for 15-30 mins under low-medium shear.
Low shear mixing paddle - viscojet
Medium shear mixing paddle: rotosolver
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