Hi, I'm new to cosmetics and desperately need some help from you guys.
I'm doing my shampoo stability test at RT and 45°C. It is separated into 2 layers where the upper layer is a bit cloudy/milky at 45°C after 2 weeks. Any ideas on why my shampoo is separating?
Below is my formulation:
Carbopol Ultrez 20 0.45%
Decyl Glucoside 4.00%
Cocamidopropyl Betaine 5.50%
Disodium Cocoamphodiacetate 3.00%
Palm Kernelamide DEA 3.00%
Xiameter MEM-1784 Emulsion
(Dimethiconol, TEA-dodecylbenzenesulfonate) 5.50%
Menthyl Lactate 0.30%
C12-15 Pareth-12 0.70%
PPG-20 Methyl Glucose Ether 1.00%
PEG-12 Dimethicone 2.50%
DMDM Hydantoin 0.70%