Foam is the role of foaming agent, which has nothing to do with facial cleanser itself. Generally speaking, foam facial cleanser will take away more water from your face, and you will feel tight or not moist enough after washing. Therefore, dry skin is not suitable for foam facial cleanser.
After using foam-free facial cleanser, first wipe it with a cleansing sponge, suck up all slippery things on your face, and then clean it with water.
Facial cleanser contains surfactant, which can be divided into multi-foam type and micro-foam type. Oil can exist stably in water through surfactant, and can be dissolved in water to achieve cleaning effect.
Extended data
Generally speaking, facial cleanser is a liquid product composed of oily raw materials, water-based raw materials, surfactants, nutrients and other ingredients. Among them, the cream facial cleanser contains oily ingredients and is suitable for dry skin. Crystal transparent products contain no oil phase components, and if the formula is properly adjusted, it can meet the needs of most consumers.
The surfactant in facial cleanser has five functions of wetting, dispersing, foaming, decontamination and emulsification, and is the main active substance of facial cleanser. In addition, according to the principle of similarity and compatibility, oil-soluble grease scale and excess grease can be dissolved by oil phase in the process of washing face; Dissolve water-soluble sweat stains and dirt on your face with its water phase.
Reference source: Baidu Encyclopedia-Facial Cleanser