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pH & Viscosity
I made a prototype and got pH 5.6 viscosity 10000 but when i made a bulk batch, it is much thinner about 5000 mpa and pH increased to 6.4. what should i do to fix this. below are the main ingredients of my prototype. Have tried to follow the same to do another prototype in same Lab same facility but can never get to same pH and viscosity. would appreciate adv how to fix this by adjusting ingredients or even adding new ingredient w/thanks
water 94.87% Carbomer 0.55% Titanium dioxide 1% Allantoin 0.03% sodium hyaluronic 1.35 % Methylisothiazolinone 0.08% Triethanoamide 0.3%EAU 0.02% -
3 Replies
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Too many electrolytes, dude! Carbomer will not sustain viscosity when you incorporate sodium ion and titanium ion within. In fact, divalent electrolytes are perticularly unforgiving with carbomers, even the alkyl-subbed ones.
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thanks for your advice. What is your suggestion to correct this? Appreciate much for your help
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Shall I take out the sodium Hyaluronic completely or cut down the % of both Titanium dioxide and Sodium hyaluronic? Will this help? Many thanks
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