
W/O cream , loses viscosity
Hello everyone, I have a problem, about a formula
Basic formula is
Monomuls 90O 2%
Lameform TGI 4%
Hydrogenated Microcrystallina cera 4%
Oil phase (including Paraffin oil, Isopropyl myristate & v.low percentage of jojoba oil & tocopheryl Acetate ) 14%
Aluminum stearate 0.25%
Water phase approx. 72% (including MgSO4..07%, Glycerin)
I have this formula in two versions, one, with parabens, and one, with phenoxyethanol & Decylene glycol mix. Both of them seem to lose viscosity (ie. from 100,000cp to 25000cps), which is a huge problem because the packaging material is a jar, of high diameter, and therefore, the bulk is pouring. I recently realized, that shear force, also affects the product. If the product is overtested (meaning extra stirring, viscosity measurements) it loses viscosity. If after filling you just let it stand there, nothing happens. And last, but not least, the version with the phenoxyethanol & DG, when put in the oven at 50 degrees for 24 h, it regains viscosity and keeps it unless, stirred again… Please do advise..