Traditional Chinese Oily beauty makeup: Workshop Formula, Ratios & Method

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Oily beauty cosmeticsBecause ascorbic acid fatty acid ester has melanin reducing effect, it is often added to various beauty cosmetics. But it has a disadvantage: poor stability. Cosmetics containing alcohol, water or alkaline substances (such as creams, lotions and certain lotions, etc.) are prone to hydrolysis, mutual esterification and other denaturation and coloring reactions, thus causing the cosmetics to lose their beauty effect.Researchers from Japan's Nissin Oil Co., Ltd. found that the solution obtained by dissolving ascorbic acid fatty acid esters with glycerol condensate and the ester generation product of higher fatty acids is uniform, transparent, and highly stable. Cosmetics prepared with it have good cosmetic effects.The esterification reaction of the glycerol condensate and the higher fatty acid is carried out under normal pressure or reduced pressure using a commonly used method. The reaction end point is determined based on the acid value. After the esterification reaction is completed, it is first decolorized with a decolorizing agent, and then deodorized and refined with water vapor.If the esterification product of glycerol condensate and higher fatty acids is a fully esterified product (all hydroxyl groups in the glycerol condensate are esterified), the solubility of ascorbic acid fatty acid esters will be reduced, and precipitation may occur during storage. Therefore, the esterification product is preferably a partially esterified product (part of the hydroxyl groups in the glycerol condensate is esterified).Glycerol condensates suitable for use in the present invention include diglycerol, triglycerol, trihydroxymethylpropane, pentaglycerol and the like.Higher ester fatty acids generally use fatty acids with more than 8 carbon atoms in the molecule. Fatty acids with less than 8 carbon atoms are irritating to the skin.There are three types of fatty acids:Advanced linear saturated fatty acids: caprylic acid, nonanoic acid and decanoic acid, etc.Advanced linear unsaturated fatty acids: hexadecanoic acid, oleic acid, linoleic acid, cis-sinapic acid, etc.Advanced side chain saturated fatty acids: synthetic fatty acids such as isooctanoic acid, isononanoic acid, isotetradecanoic acid, isohexadecanoic acid, and isoctadecanoic acid.Among the above fatty acids, from the aspects of oxidative stability, touch, freezing point, etc., high-grade side chain saturated fatty acids are more suitable for use in the present invention.The ascorbic acid fatty acid ester used in the present invention refers to esterification products such as monoesters, diesters, and triesters of ascorbic acid and higher fatty acids. Such higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, oleic acid, etc. In the total amount of cosmetics, …

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