***By cleansing oil we mean any product that has an oily consistency, therefore also butters or oleogels or dense and solid oils.
Double cleansing consists of cleansing your face with two cleansers: one foaming and the other oily.
With the foaming detergent, a contrast cleansing is carried out in which the substance responsible for the cleansing action is the surfactant. The removal of dirt is guaranteed by the presence of the surfactant capable of solubilizing and conveying grease and dirt into the water.
With the oily detergent, however, a cleansing is carried out by affinity in which the substance responsible for the cleansing action is the lipid (oil) which carries out a solvent action towards the fats in which the dirt is incorporated (like dissolves like ).