The importance of alkyl polyglycosides in cosmetics industry

2021-05-17 16:58:12

Alkyl polyglycosides in the cosmetics industry, solvent mainly used in cosmetics, hair oil, hair and other products. Due to the differences in structure and polarity of oily components in cosmetics, the mechanism of solubilization is also different. Non ionic surfactants such as polyoxyethylene castor oil, polyoxyethylene castor oil, polyoxyethylene sorbitol, polyglycerol fatty acid ester and amphoteric derivatives of castor oil can achieve better solubilization effect. When the dissolving object of make-up lotion is perfume, alkyl polyoxyethylene ether should be used. Other surfactants used as solubilizers require high hydrophilicity. In addition, the solubilizer should have no irritation to eyes and skin.

Alkyl polyglycosides are the products of hemiacetal hydroxyl and fatty alcohol hydroxyl of glucose, which lose a molecule of water under the catalysis of strong acid. Because the product is not a simple compound, but a complex mixture of alkyl monoglycosides, diglycosides, triglycosides and oligoglycosides, it is commonly known as alkyl polyglycosides (APG).

Emulsification is the phenomenon that the non water soluble substance is emulsified uniformly in water to form emulsion. Emulsifiers are mainly used in cosmetics to produce paste and emulsion. The common powdery cream and Zhongxing cream are o / W type emulsions, which can be emulsified with anionic emulsifier fatty acid soap (soap). It is easier to make emulsion with less oil by soap emulsification, and the gelling effect of soap can make it have higher viscosity. For the cold cream containing a large amount of oil phase, the emulsion belongs to w / O type, and natural lanolin with high water absorption and viscosity can be selected for emulsification. At present, the most widely used non-ionic emulsifier is due to its safety and low irritation.  

The phenomenon of increasing the solubility of slightly soluble or insoluble substances is called solubilization. When surfactant is added to water, the surface tension of water will decrease sharply, and then the micelles of surfactant molecules will be formed. The concentration of surfactant used in micelle formation is called critical micelle concentration. When the surfactant concentration reaches the critical micelle concentration, the micelles can attract oil or solid particles to one end of the lipophilic group, thus increasing the solubility of micro soluble or insoluble substances.