are compound mixtures made from various raw materials after reasonable blending and processing. There are many types of cosmetics with different properties. According to the raw material properties and uses of cosmetics, it can be roughly divided into two categories: base raw materials and auxiliary raw materials. The former is a main raw material of cosmetics, which occupies a large proportion in cosmetic formulations, and is the main functional substance in cosmetics. The latter is responsible for shaping, stabilizing or imparting color, fragrance, and other characteristics to cosmetics. These substances are not used in large amounts in cosmetic formulations, but are extremely important. Oily raw materials Oily raw materials include natural oily raw materials and synthetic oily raw materials. They mainly refer to oils, waxes, hydrocarbons, fatty acids, fatty alcohols, and esters. They are one of the main raw materials for cosmetics. Powdery raw materials powdery raw materials are mainly used in powdered cosmetics, talcum powder, perfume powder, pressed powder, lipstick, rouge, eye shadow and other raw materials. It is mainly used in cosmetics to cover, smooth, adhere, absorb, and extend; the commonly used raw materials in OEM cosmetics
include inorganic powdery raw materials, organic powdery raw materials and other powdery raw materials. Gum raw material Gum raw material is a water-soluble polymer compound, which can swell into a colloid in water. It can produce a variety of functions when used in cosmetics. It can make solid powder raw materials stick and shape. The suspension has a creamy effect, as an emulsifier, and also has a thickening or gelation effect. Water-soluble polymer compounds used in cosmetics are mainly divided into two categories: natural and synthetic. Semi-synthetic water-soluble polymer compounds are often used: methyl cellulose, ethyl cellulose, sodium carboxymethyl cellulose, hydroxyethyl cellulose, guar gum and its derivatives. Commonly used to synthesize water-soluble polymer compounds: polyvinyl alcohol, polyvinylpyrrolidone, acrylic polymer, etc. These are used in cosmetics as adhesives, thickeners, film-forming agents, and emulsion stabilizers. Surfactant From the chemical structure, one end of the surfactant is a hydrophobic group, and the other end is a hydrophilic group. Surfactants have the functions of removing dirt, thickening, foaming, and wetting. They have been widely used in industrial and agricultural production and are called industrial monosodium glutamate by the chemical industry. Nowadays, the annual output value of surfactants in the world has reached 16 million tons. These surfactants are commonly used raw materials in cosmetics. Surfactants have three characteristics: decontamination effect, which is used in the production of clean OEM cosmetics; emulsification, surfactants used in the production of creams and shampoo
s as emulsifiers; wet penetration, such as hair dyes and perms. In contact with the skin, use cream and lipstick for spreading. There are many types of surfactants, and they are usually divided into two categories according to the degree of dissociation in the aqueous solution: nonionic surfactants and ionic surfactants; the latter is divided into three categories, anionic surfactants and cationic surfactants And two-type ionic surfactants. In the cosmetics processing, in addition to the above-mentioned raw materials, there are the following substances: solvent raw materials, flavors and fragrances, dyes, pigments, preservatives, antioxidants, etc. These substances play an important role in OEM cosmetics. Solvent raw materials are an indispensable main component in liquid, paste, and cream cosmetic formulations. Such cosmetics include: perfume, cologne, toilet water, conditioner, shampoo, mascara, shaving cream, Shampoo, etc., play a dissolving effect in these cosmetics, so that the products have certain properties and dosage forms. Solvent raw materials include: water, alcohols (ethanol, isopropanol, n-butanol), ketones (acetone, butanone), ether esters, aromatic solvents (toluene, xylene). In cosmetics, water is an indispensable raw material for cosmetics, and the commonly used product water is treated deionized water. At present, some well-known large-scale cosmetics companies in developed countries generally have specialized research institutions. The research fields include: safety evaluation and analysis of raw materials and products, such as toxicology, skin reactions, etc.; cosmetic development prediction analysis; raw material functional testing; Professional research on products of different categories; various preparations before product launches, etc. Although cosmetics has not been fully developed at present, a lot of research has been done on the combination of the development of cosmetics and the scientific testing of its efficacy, and considerable results have been achieved.
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