Due to the polydimethylsiloxane polyether copolymer, the aqueous solution also has a cloud point similar to that of polysiloxane polyether nonionic surfactants. These products have the characteristics of low toxicity, antibacterial, hard water resistance and good compatibility with various surfactants. They can be used in shampoos with high safety, as foaming agents and hair conditioners. Used in skin cleansers, bath products or conditioning shampoos, it has good affinity, and can reduce the degreasing effect of anionic surfactants such as fatty alcohol polyoxyethylene ether sulfate (AES), increasing detergency, mildness and Emollient, has strong adsorption to the skin and hair, and has the effect of eliminating static electricity to the hair. According to the classification of the structural units in the hydrophilic group, betaines can be divided into zwitterionic silicone surfactants such as phosphate betaine, carboxylic acid betaine, and sulfobetaine.