In cosmetics, the surfactant (also known as the interface active agent) plays multiple effects. The following are several common functions of surfactants in cosmetics:
Cleaning: Surface active agent is a key component in cleaning products. They can combine with water and oil to form an emulsification system and effectively remove dirt, oil and makeup. The surfactant can wrap the dirt particles and suspend it in the water so that it can be washed away easier.
Foaming effect: Many people are used to rubbing facial cleanser, shower gel and shampoo, which is used to use the foaming effect of the surfactant. Surface active agents can reduce the surface tension of liquid, promote the dispersion of air, and form a rich foam. This foaming effect makes it easier for products to apply and clean it, providing a better experience.
Emulsion stabilization: Lotion, frost products and emulsification oil in many cosmetics need to maintain a stable emulsion state. Surface active agents can form a interface adsorption layer between water and oil phase to reduce the mutual attraction between droplets, thereby stabilizing the emulsification system. This enables the product to maintain a uniformly dispersing state for a long time to avoid oil and water separation.
Soft effect: Some surfactants have a smooth effect and are often used in hair care products. They can be adsorbed on the surface of hair, reduce the friction of hair scales, reduce the discomfort caused by electrostatic, and make the hair softer, easy to sort out and shape.
Infiltration enhancement effect: In some cosmetics, surfactants can enhance the penetration performance of other active ingredients. They change the characteristics of skin or hair surface, so that other ingredients can better absorb and play their effects.
It is worth noting that choosing the right surfactant is very important for cosmetics’s performance and safety. When using cosmetics, you should follow the product description and personal skin type and sensitivity to avoid excessive use or sensitivity to allergens.