There was no major increase in viscosity worth at decreased concentrations of PIL Answer due to the solvation of ions but while in the concentrated Alternative rising ion–ion interactions results boosts the value of viscosity. Rhamnolipids can boost the solubilization of hydrophobic compounds by growing the hydrophobicity of amphiphilic molecule. https://surfactanttypesandapplica31761.bloggerchest.com/32000474/the-smart-trick-of-application-of-surfactants-in-cosmetics-slideshare-that-no-one-is-discussing