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?
Comments
So what do you all use in place of Cetyl or Cetearyl alcohol in order to thicken a product but not have this occur over time?
Thnx @Bobzchemist
This means certain other glycols can be used as well to regulate the viscosity in emulsions if incorporated and chosen wisely.
One thing we did that was interesting (I knew of this but forgot). Took out cetyl alcohol totally. We had polyquat 10 in the formula, about 0.4%. After the emulsion and after cool down we added about 0.3% SLS to see if it helped the emulsion any. Upon addition it thickened the product. It is the combo of polyquat 10 and SLS
Bobzchemist, It was nice purple prose
BobZchemist,
Is using Behenyl Alcohol instead of Cetyl Alcohol a direct replacement or is it formulation dependent?
Thanks