Cosmetics Formulation Development

Ask SepGEL305 if left for 5 6 months, the concentration of the substance. Will it decrease? Normally, make a lotion. Open for the first time in the formula I use. SepGEL305 at 1.2%, the thickness of the meat is just right. Then I left it and came back to do it again after the first use, about 5 6 months. When I put it back on, I need to use 1.8% of the formula to get the same consistency. (Shake it before using it every time) I want to know if you leave it. Will it reduce the concentration of the substance?

Hello, what are the ingredients used in the formula? that affect the viscosity or not, for example, some electrolyte, glycol, สารกันเสีย such as Phenoxyethanol , acid/base Each of these ingredients may have an impact on different thicknesses including mixing steps It also affects the thickness (adding sequence, blending speed).