Recently I am finding that many of our formulations are almost doubling in viscosity over 2 to 4 days after a sample is made.
I am wondering if this is common to others too? We have some samples recently that started out same day pourable as a milk shake and then set up to the point where it won't pour at all in 2 or 3 days.
The base of most of these usually contains
Water, Prop Glycol, PEG-40 Stearate, Cetyl Alcohol, GMS 165, oils, Isopropyl palmitate
What is your experience as far as lotion or creams thickness over a few days time?