To establish a method for the determination of glycyrrhizic acid dipotassium in various cosmetics(shampoo,shower gel,hair conditioner and cleanser)with High Performance Liquid Chromatography.ZORBAX SB-C18 column(4.6 m...To establish a method for the determination of glycyrrhizic acid dipotassium in various cosmetics(shampoo,shower gel,hair conditioner and cleanser)with High Performance Liquid Chromatography.ZORBAX SB-C18 column(4.6 mm×250 mm,5μm)was used.The 0.01 mol/L phosphoric acid solution-acetonitrile(63:37)was used as the flow equivalent elution.The sample was extracted by ultrasonic methanol and detected by diode array detector,The extraction solvent and chromatographic conditions were studied and optimized.Glycyrrhizic acid dipotassium has a good linear relationship in the concentration range of 1~200μg/mL(R²=0.9997).The average recovery rates of glycyrrhizic acid dipotassium in shampoo,shower gel,hair conditioner and cleanser were 92.92%~101.69%.The method was precise and accurate and could be used for the qualitative and quantitative analysis of Glycyrrhizic acid dipotassium in cosmetics.展开更多
Based on the special users of baby sunscreen cosmetics, the review shows how to choose forms, UV filters and how to match UV filters emphatically according to the characteristics of baby skin. Then the choosing of emo...Based on the special users of baby sunscreen cosmetics, the review shows how to choose forms, UV filters and how to match UV filters emphatically according to the characteristics of baby skin. Then the choosing of emollient, emulsifier, soothing, the design of water-resistance and the using of controversial ingredients were introduced. The review shows guidance for cosmetic formulator to design baby sunscreen cosmetics.展开更多
文摘To establish a method for the determination of glycyrrhizic acid dipotassium in various cosmetics(shampoo,shower gel,hair conditioner and cleanser)with High Performance Liquid Chromatography.ZORBAX SB-C18 column(4.6 mm×250 mm,5μm)was used.The 0.01 mol/L phosphoric acid solution-acetonitrile(63:37)was used as the flow equivalent elution.The sample was extracted by ultrasonic methanol and detected by diode array detector,The extraction solvent and chromatographic conditions were studied and optimized.Glycyrrhizic acid dipotassium has a good linear relationship in the concentration range of 1~200μg/mL(R²=0.9997).The average recovery rates of glycyrrhizic acid dipotassium in shampoo,shower gel,hair conditioner and cleanser were 92.92%~101.69%.The method was precise and accurate and could be used for the qualitative and quantitative analysis of Glycyrrhizic acid dipotassium in cosmetics.
文摘Based on the special users of baby sunscreen cosmetics, the review shows how to choose forms, UV filters and how to match UV filters emphatically according to the characteristics of baby skin. Then the choosing of emollient, emulsifier, soothing, the design of water-resistance and the using of controversial ingredients were introduced. The review shows guidance for cosmetic formulator to design baby sunscreen cosmetics.
