Ways to dissolve menthyl lactate/menthol
Hi, just have some doubt about the way to dissolve menthol and menthyl lactate. Last week, I read one journal and it stated that “Add the premixed composition containing menthol and menthyl lactate into suitable surfactants and mix, and then combine with water, oil or esters and homogenize.”
Does anyone know what is the suitable surfactant that can be used? I want to dissolve menthyl lactate and menthol in my shampoo.
Currently, I premixed the 0.3% menthyl lactate and 0.7% menthol with 1.5% fragrance oil and 3% hydrogenated castor oil. But the formulation of my shampoo seems unstable. It separated into 2 layers after 2 weeks at 45C.