In the cosmetics industry, stearic acid is indispensable for the manufacture of general emulsified products. Raw materials used in the preparation of creams, cold creams, foundation creams, shaving creams, hair lotions and skin care lotions. It plays an emulsifying role in the two types of skin care products: lip balm and cold cream, turning it into a stable and white paste. Today, I will show you the stearic acid supplier.
About cream and cold cream:
Snow cream is a cream with stearic acid as the main component. When applied to the skin, it melts into the skin like snowflakes and disappears, forming a thin film on the skin surface, which makes the skin contact with the outside world. Dry air isolation can control the evaporation of epidermal moisture and protect the skin from dryness, cracking or roughness. The whitening, anti-aging and other active ingredients in facial creams and lotions can be better absorbed by the skin, have good emollient effects, and also have moisturizing effects. They can isolate the dry climate from the outside, prevent the skin from losing too much water, and avoid skin dryness and cracking. Skin.
Cold cream, also known as balm or skin cream, stearic acid is also one of its indispensable ingredients. It is mostly a water-in-oil emulsion. Water separates from the skin, and the water evaporates and absorbs heat, making the skin feel cool, hence the name cold cream. High-quality cold cream has a smooth and shiny appearance, no separation of oil or moisture, no shrinkage, no streaks, moderate consistency, and is easy to apply.
About stearic acid:
Steearyl Stearic acid is a high-grade saturated fatty acid, also known as stearic acid, which is a fatty acid widely found in nature. Stearic acid is found in varying amounts in almost all oils and fats, and is higher in animal fats, such as butter. Up to 24%, the content in vegetable oil is less, tea oil is 0.8%, palm oil is 6%, but the content in cocoa butter is as high as 34%. There are two main production methods for industrial stearic acid: fractionation method and pressing method. A decomposing agent is added to the hardened oil, and then it is hydrolyzed to obtain crude fatty acids, which are then washed, distilled, and decolorized to obtain the finished product, while glycerol is produced as a by-product.
About emulsification:
Cream, The reason why creams and the like form emulsions is because they are oil/water two-phase systems, most of which are oil-in-water, and a small number of which are water-in-oil. Many skin care products you see are in the form of lipstick and are relatively stable. Stearic acid plays an important role in them.
Emulsification is the process of dispersing one liquid into a second immiscible liquid. The largest group of emulsifiers are soaps, detergents and other compounds whose basic structure is an alkane chain with a polar group at the end. In the human body, bile emulsifies fat into smaller fat particles. As the carbon chain grows, the interfacial tension decreases and the emulsification effect gradually increases, forming an emulsion with higher stability. Some low-carbon alcohols (such as pentanol) can reduce the oil-water interfacial tension to a very low level, but they cannot form stable emulsions. The lipophilic emulsifier with HLB value and other hydrophilic emulsifiers can improve the emulsification stability of beverages and condensed milk.
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