Cosmetic Raw Materials
Cosmetics are compound mixtures made from various raw materials after reasonable blending and processing. There are many types of cosmetics raw materials 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.
Cosmetics are chemical mixtures made of natural, synthetic or extracted substances with different functions as raw materials and processed through production processes such as heating, stirring and emulsification.
Cosmetic Raw Material List
Raw Cosmetic Ingredients
The main raw materials of cosmetics are usually divided into general base raw materials and natural additives.
The general base materials for cosmetics include: oily raw materials, which are the most widely used raw materials for cosmetics. They protect, moisturize and soften the skin in skin care products, and they can be used for styling and hairdressing in hair products. Surfactants can reduce water content. Surface tension, with the functions of decontamination, wetting, dispersion, foaming, emulsification, thickening, etc., is known as industrial monosodium glutamate; moisturizer is an indispensable raw material for cream cosmetics, and its function is to prevent the paste from drying out. Keep skin moisture; adhesive, mainly used for hair spray, mousse and gel-like mask; powder, mainly used to make powder products; pigments, dyes, mainly used to make cosmetic modification products; preservatives, antioxidants Agents, inhibit the growth of microorganisms during the shelf life of cosmetics and during consumer use; perfumes, increase the fragrance of cosmetics and increase product value; other raw materials, including ultraviolet absorbers, dye intermediates for black hair, perm raw materials, antiperspirants , Deodorant, anti-dry and cracked raw materials, anti-acne raw materials, etc.
Common natural additives include hydrolyzed gelatin, hyaluronic acid, superoxide dismutase (SOD), royal jelly, silk fibroin, mink oil, pearls, aloe vera, medical stone, organic germanium, pollen, alginic acid, sea buckthorn, Chinese herbal medicine, etc.
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 the main raw materials for cosmetics. Grease is the general term for oils and fats, and fats include vegetable fats and animal fats. The main component of oil is fatty acid glyceride composed of fatty acid and glycerin.
Vegetable oils are divided into three categories, drying oils, semi-drying oils and non-drying oils. Drying oils such as linseed oil and sunflower oil; semi-drying oils such as cottonseed oil, soybean oil, and sesame oil; non-drying oils such as olive oil, coconut oil, and castor oil. Most of the fats and oils used in cosmetics are semi-drying oils, and dry oils are hardly used as raw materials for cosmetics. Commonly used fats and oils are: olive oil, coconut oil, castor oil, cottonseed oil, soybean oil, sesame oil, almond oil, peanut oil, corn oil, rice bran oil, tea seed oil, sea buckthorn oil, avocado oil, stone chestnut oil, European nuts Oil, walnut oil, cocoa butter, etc.
Animal oils and fats are used in cosmetics such as mink oil, egg butter, lanolin, lecithin, etc. Animal oils and fats generally include highly unsaturated fatty acids and fatty acids. Compared with vegetable oils and fats, their color and smell are poor. Attention should be paid to anti-corrosion issues during specific use. Mink oil has good affinity, is easily absorbed by the skin, is smooth and not greasy after use, and has excellent performance. Therefore, it is widely used in cosmetics, such as nutrient cream, moisturizer, hair oil, shampoo, lipstick and Sunscreen cosmetics, etc. Egg butter contains fats, phospholipids, lecithin, vitamins A, D, E, etc., and can be used as a raw material for lipstick cosmetics. Lanolin oil has good skin affinity, permeability, diffusion, good lubrication and softness, easy to be absorbed by the skin, safe and non-irritating to the skin; it is mainly used for anhydrous ointments, lotions, hair oils and bath oils. Lecithin is extracted from egg yolks, soybeans and grains. It has the effects of emulsifying, anti-oxidizing and moisturizing the skin. It is a good natural emulsifier and is often used in moisturizing creams and oils.
Waxes are esters composed of high-carbon fatty acids and high-carbon fatty alcohols. This ester plays a role in stability, viscosity adjustment, and reduction of greasy feeling in cosmetics. The waxes mainly used in cosmetics are: palm wax, candelilla wax, jojoba wax, wood wax, lanolin, beeswax and so on.
The refined product of palm wax is white or light yellow, brittle and hard solid, with a pleasant smell. The main components are mellyol cerate and wax ester of cerate. In cosmetics, it mainly increases the melting point of wax esters, increases hardness, toughness and gloss, and also tends to reduce viscosity, plasticity and crystallization. Mainly used in lipstick, mascara, hair removal wax and other products.
Candelilla wax is a light yellow translucent or opaque solid. The exquisite product is shiny and aromatic, slightly sticky. The main ingredients are carbohydrates, wax esters, higher fatty acids, higher alcohols, etc. Used in lake-like cosmetics such as lipsticks.
Jojoba wax is a transparent, odorless, light yellow liquid. Mainly wax esters composed of fatty acids with more than twelve carbon atoms and fatty alcohols. Its characteristics are not easy to oxidize and rancidity, non-toxic, non-irritating, easy to be absorbed by the skin, and have good moisturizing effects. Therefore, it is widely used in products such as moisturizers, creams, shampoos, hair conditioners, lipsticks, nail polishes, baby skin care products and cleansers.
Wood wax, also known as Japanese wax, is a light milk-colored wax with a sour odor, not hard, and has toughness, ductility and stickiness. Its main component is palmitic acid triglyceride, which is vegetable fat or high-melting fat. It is easily compatible with beeswax, cocoa butter and other triglycerides, and is easily saponified by alkali to form an emulsion. Used in lotion and cream cosmetics.
Beeswax is also called beeswax. It has the characteristics of high melting point, so it has been a raw material for cold creams since ancient times. It is also a raw material for making hair wax, rouge, lipstick, eye shadow stick, mascara and other cosmetic cosmetics. In addition, it has anti-bacterial, fungal, wound healing functions, and is also used in shampoos, shampoos, and high-efficiency anti-dandruff shampoos. Lanolin is a secretion from the cortical glands of sheep. The product is a yellow translucent oily viscous ointment-like semi-solid. There are water and no water. The main components are fats of various fatty acids and fatty alcohols, which are melting point waxes. It has good emulsification, wetting and penetration effects. It has the functions of soft skin, preventing degreasing and preventing skin chapped, and can be compatible with many kinds of raw materials. It is a good raw material for cosmetics. It is widely used in skin care creams, sunscreen products and hair care esters, as well as in soaps, lipsticks and other cosmetics.
Hydrocarbon refers to a type of carbohydrate derived from natural mineral refinement. They have a high boiling point, mostly above 300°C, without the saponification value and acid value of animal and vegetable fats and oils. According to its nature and structure, it can be divided into three categories: aliphatic hydrocarbons, alicyclic hydrocarbons and aromatic hydrocarbons. In cosmetics, it is mainly used as a solvent to prevent the evaporation of moisture on the skin’s surface and improve the moisturizing effect of cosmetics. Hydrocarbons commonly used in cosmetics include liquid paraffin, solid paraffin, microcrystalline paraffin, ozokerite, petrolatum and so on.
Liquid paraffin is also called white oil or wax oil. It is a colorless, transparent, tasteless and odorless viscous liquid. It is widely used in cosmetics such as hair oil, wax, hair cream, cream, cold cream and shaving cream.
Vaseline, also known as mineral grease, is a white and light yellow uniform paste. It is mainly a mixture of C16-C32 high-carbon alkanes and high-carbon olefins. It has the characteristics of odorless, odorless, good chemical inertness, good adhesion, low price, lipophilicity and high density. It is used in skin care creams, hair products, cosmetics, cosmetics, such as: cleansing cream, beauty cream, hair wax, lipstick, eyeshadow, mascara and hair dye cream, etc. In the pharmaceutical industry, it is also used as an ointment base or as an important ingredient in pharmaceutical cosmetics.
Because solid paraffin has no adverse reactions to the skin, it is mainly used as a raw material for hair wax, balsam, rouge, lipstick and other oils and fats.
In cosmetics, ozokerite is divided into two grades. The first grade has a melting point of 74℃-78℃ and is mainly used as a raw material for emulsion products; the second grade has a melting point of 66℃-68℃ and is mainly used as an important raw material for hair wax.
Squalane is produced by hydrogenation of squalene obtained from deep-sea shark liver oil. It is a colorless, transparent, odorless, odorless, and non-toxic oily liquid. The main components are myristic acid, myristic acid, and squalene. , Squalane, etc. Squalane has good permeability, lubricity and safety, and is often used in various types of creams, lotions, lotions, lipsticks, conditioners, eyeliner and other high-end cosmetics.
If you want to buy cosmetic raw materials, pls contact us.
Synthetic Cosmetics Raw Materials
Refers to modified oils and waxes that are processed and synthesized from various oils or raw materials. Not only are they similar in composition to the raw oils and maintain their advantages, but are also in terms of purity, physical shape, chemical stability, microbial stability, and irritation to the skin. Skin absorption and other aspects have been significantly improved and improved, so it has been widely used in various cosmetics. Commonly used synthetic oil materials include: squalane, lanolin derivatives, polysiloxanes, fatty acids, fatty alcohols, fatty acid esters, etc.
Lanolin derivatives are a series of lanolin derivatives. Including: lanolin alcohol, lanolin acid, pure lanolin wax, acetic acid lanolin wax, acetylated lanolin alcohol, polyoxyethylene hydrogenated lanolin, etc. Lanolin is a light yellow to light brown waxy solid with a slight odor. It is insoluble in water and better than lanolin. It is widely used in various cosmetics, such as baby products, dry skin skin care products, creams, lotions, etc. Lanolin has a good moisturizing effect on the skin and is often used in shaving cream. Pure wool wax has good stability, is easy to absorb, and has good emollient. Therefore, it is mainly used in emulsified products, such as creams and ointments. Acetylated wool wax is mild, safe and reliable. It is often used in emulsions, creams, skin care products and sunscreen cosmetics. It is mixed with mineral oil and used in cosmetics such as baby oil, bath lotion, lipstick, hair oil and hair gel. Polyoxyethylene hydrogenated lanolin is a milky white waxy solid with slight odor obtained by the addition reaction of hydrogenated lanolin and ethylene oxide. High stability, good water absorption, suitable for perm, hydrogen peroxide ointment, etc., also used in lipstick, hair conditioner, various creams and lotion products.
Also known as silicone oil or silicone. It and its derivatives are a kind of high-quality raw materials for cosmetics, with physiological inertness and good chemical stability, odorless, non-toxic, non-irritating to the skin, and good skin care functions. It has lubricating properties, anti-ultraviolet radiation, good air permeability, slow release of flavors and fragrances, good antistatic, and obvious dust-proof function; high stability, does not affect the matching with other ingredients. Commonly used are polydimethylsiloxane, polymethylphenylsiloxane, cyclic polysiloxane and so on. Due to its good flexibility, polydimethylsiloxane often replaces traditional oily raw materials in cosmetics, such as paraffin, petrolatum, etc., to make cosmetics, such as creams, lotions, lipsticks, eyeshadows, mascaras, shampoos, etc. . Polymethylphenylsiloxane is a colorless or light yellow transparent liquid. It has good skin permeability and a good skin feel after use. It can increase the softness of the skin, deepen the color of the hair, and maintain natural luster. It is commonly used in advanced skin care products. And beauty cosmetics. Cyclic polysiloxane has low viscosity and good volatility. It is mainly used in cosmetics, such as creams, lotions, bath oils, shampoos, colognes, stick-shaped cosmetics, and anti-sweat products.
There are many kinds of cosmetic raw materials, such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oil and so on. Fatty acid is the raw material of cosmetics. It is mainly combined with potassium hydroxide or triethanolamine to produce soap as an emulsifier. Lauric acid, also known as dodecanoic acid, is a white crystalline waxy solid. In cosmetics, lauric acid and sodium hydroxide, potassium hydroxide or triethanolamine are generally neutralized to form soap, which is used as an emulsifier and dispersant in the manufacture of cosmetics. It has good foaming properties and stable foam. It is mainly used in products such as shampoos, facial cleansers and shaving creams. Myristic acid has the same application scope as lauric acid, and is mainly used as the raw material of facial cleanser and shaving cream. Palmitic acid is a raw material for creams, lotions, surfactants, and oils. Stearic acid and oil are raw materials for creams, hair creams, lotions, lipsticks, and surfactants.
As oil and fat raw materials, mainly C12-C18 higher fatty alcohols, such as lauryl alcohol, cetyl alcohol, stearyl alcohol, etc. as humectants; propylene glycol, glycerol, sorbitol, etc. can be used as viscosity agents, reducers, qualitative agents and fragrances The solvent is used in cosmetics. Lauryl alcohol is rarely used directly in cosmetics, but is mostly used as a surfactant; cetyl alcohol is widely used in cosmetics as the basic oil and fat raw material for creams and lotions. Stearyl alcohol is the basic raw material for the preparation of creams and lotions. It is matched with cetyl alcohol and used in the production of lipstick products.
Most of them are formed by esterification of higher fatty acids and low molecular weight monohydric alcohols. It is characterized by mutual solubility with oils, low viscosity, good ductility, and good skin permeability. It is widely used in cosmetics. Butyl stearate is the raw material of nail polish and lipstick; isopropyl myristate and isopropyl palmitate can be used in hair care, skin care and beauty cosmetics; isooctyl stearate is mainly used in cream products.
Powdery Cosmetic Raw Materials
Powdery raw materials are mainly used in powdered cosmetics, talcum powder, powder, pressed powder, lipstick, rouge and eye shadow. It is mainly used in cosmetics to cover, smooth, adhere, absorb, and extend; the raw materials commonly used in cosmetics include inorganic powdery raw materials, organic powdery raw materials and other powdery raw materials.
These raw materials generally contain heavy metals that are toxic to the skin. When applied, the content of heavy metals should not exceed the content specified by the national cosmetics hygiene regulations.
Inorganic silty raw materials
Inorganic powdery raw materials used in cosmetics include: talc, kaolin, bentonite, calcium carbonate, magnesium carbonate, titanium dioxide, sienna powder, diatomaceous earth, etc.
Talc is a natural silicate, and its main component is hydrous magnesium silicate. The characteristics are white, smooth and soft, without any chemical reaction to the skin. It is mainly used as an important raw material for various powder cosmetics such as talcum powder, fragrance powder, pressed powder, and rouge.
Kaolin is also called white clay. The main component is hydrous aluminum silicate. It is a white or light yellow fine powder. It has good adhesion to the skin, inhibits sebum and absorbs sweat. It can be used in cosmetics with talcum powder to relieve and eliminate talc. The function of powder gloss is mainly used as an important raw material for various powder cosmetics such as vermicelli, eye shadow, talcum powder, powder, powder cake, rouge and so on.
In cosmetics, it is mainly used for suspensions and powders for emulsion products.
It is an odorless, tasteless, white, amorphous fine powder with strong hiding power and low UV transmittance. Therefore, it is used in sunscreen cosmetics, and also used in vermicelli, eye shadow, talcum powder, powder, It is an important covering agent for various powder cosmetics such as pressed powder and rouge.
PMS 310 is a spherical polymethylsilsesquioxane silicon powder with an average particle size of 3-10 microns. It is a silicone powder made by a special process technology. It combines the advantages of inorganic powder and organic powder. It has a smooth and silky skin feel and excellent water resistance. It is different from the cold and hard feeling of inorganic mineral powder, and its organic silicon property makes it feel soft and elastic when touched, as smooth as silk.
Organic powdery raw materials
Organic powder raw materials include zinc stearate, magnesium stearate, polyethylene powder, cellulose beads, polystyrene powder, etc., which are mainly used in various powder cosmetics such as talcum powder, fragrance powder, pressed powder, rouge, etc. As adsorbent.
Other powdery raw materials mainly include: urea formaldehyde foam, microcrystalline cellulose, mixed fine powder, silk powder and surface treatment fine powder.
Glue Cosmetic Raw Materials
The colloidal 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 powdery raw materials stick and shape. It can be used as a glue for emulsions or suspensions. Play a creamy effect, as an emulsifier, in addition to thickening or gelation.
Water-soluble polymer compounds used in cosmetics are mainly divided into two categories: natural and synthetic. Natural water-soluble polymer compounds include starch, vegetable gum, animal gelatin, etc., but the quality is unstable, easily affected by the climate and geographical environment, and the yield is limited, and it is susceptible to deterioration due to bacteria and mold. Synthetic water-soluble polymer compounds include: polyvinyl alcohol, polyvinylpyrrolidone, etc., which have stable properties, low skin irritation, and low price. Therefore, they have replaced natural water-soluble polymer compounds as the main source of colloidal raw materials. It is divided into semi-synthetic and synthetic water-soluble polymer compounds. 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.
Plant Cosmetic Raw Materials
Cosmetic raw materials are updated with the changes in the demand of the cosmetics consumer market. Consumers’ requirements for skin care products not only have the functions of cleaning and moisturizing, but also hope to reduce wrinkles and enhance skin elasticity. Cosmetic manufacturers have begun to use natural active cosmetic raw materials in large quantities. . In addition, due to anti-aging, the demand for natural ingredients in skin care products has increased, and various vitamins, active substances, and plant essences will dominate the world’s cosmetic raw materials market in the future.
Experts pointed out that this consumption trend will be a popular trend in the global cosmetics market in the future. Others used for skin and hair care include shrimp shell extract chitosan, seaweed extract algae, and yeast or fungus extraction.
Green tea has a strong antibacterial effect and enzyme inhibitory effect, which can prevent skin diseases, skin allergies, remove skin pigments, prevent dental caries, dental plaque, periodontitis and bad breath.
A highly tolerant precious plant that takes only 5 to 10 years to mature-gentian extract, which can not only strengthen the moisturizing effect, but also increase the skin’s absorption of whitening essence, expel melanin deposits, and penetrate deep into the cutin. Layer, whitening from the base, diminishing stains, and improving the dull and gray condition of the skin.
Almonds can moisturize the skin, and are the main medicine used by the ancient regimen to moisturize and beautify. Almonds are rich in fatty oils and proteins, which have the effects of moisturizing the skin, clearing the meridians and collaterals.
Chamomile: Chamomile essential oil can improve sensitive, dehydrated, dry and peeling skin, and increase skin elasticity. It can also treat skin inflammation such as skin eczema, abscess, acne, promote wound healing, and has the effect of conditioning sunburn and scalded skin.
The fruit acid in apples has a very good effect on reducing spots.
“Aoyuan” grape seed extract extracted from the seeds of Australian red grapes, rich in OPC (Oligomeric Proanthocyanidins) super antioxidants. The antioxidant effect of OPC is 50 times that of Vitamin E and 20 times that of Vitamin C. It can prevent more than 80 kinds of diseases caused by free radicals and become the most ideal natural skin protection star.
Olive oil is rich in vitamins. The content of vitamin E is higher than other green plants. It can moisturize dry skin and inhibit sebum secretion of oily skin. It is suitable for the regulation of various skin conditions. When the sun is strong, applying sunscreen products containing olive oil essence can keep the skin’s moisture for a long time, so that the skin will not be too dry while being effective in sun protection. The active compound ingredients extracted from olive leaves are rich in antioxidants and have a good effect on smoothing fine lines and anti-aging.
Solvent extraction method separates and purifies licorice flavonoids in licorice, which has the effect of mildly inhibiting tyrosinase. Licorice extract has been proven to be the most effective plant whitening agent. Licorice is one of the most expensive cosmetic raw materials because the content of active ingredients in licorice is not high and it is difficult to purify. A few days ago, the “solvent extraction method to separate and purify glycyrrhizic acid in licorice” was successful and passed the technical achievement appraisal hosted by the High-Tech Research and Development Bureau of the Chinese Academy of Sciences.
Cosmetic raw materials extracted from various natural plants have become a trend in the industry, and with the increasing advancement of science and technology, such cosmetic raw materials with an “environmental protection” label will be widely used in the production of cosmetics.
Cosmetic Raw Materials and Accessories
Auxiliary raw materials refer to the raw materials that stabilize and modify the content itself (aromatic, smooth, color, etc.), such as preservatives, antioxidants, chelating agents, colorants, flavors, etc.
Preservatives refer to substances in cosmetics for the purpose of inhibiting the growth of microorganisms in the cosmetics. In cosmetics, preservatives are used to protect the product, protect the product from microbial contamination, and extend the shelf life of the product. Ideal preservative requirements: colorless and odorless; work at low concentrations; have broad-spectrum antibacterial activity; good compatibility of cosmetic raw materials; active in all pH ranges; safe for humans and the environment. The “Safety Technical Specifications for Cosmetics” (2015 edition) permitted preservatives for cosmetics (Table 4) lists 51 permitted preservatives for cosmetics. The table indicates the name of the substance (Chinese name, English name, INCI name), the maximum allowable concentration when using cosmetics, the scope of use and restrictions, the use conditions and precautions that must be printed on the label, and the relevant The project made the necessary comments. When using the corresponding preservatives in the table, be sure to comply with the relevant requirements specified in the table.
Antioxidants are substances that can prevent or delay oxidation. Since the base material in cosmetics is oil, its unsaturated bonds are easily oxidized and become rancid, so antioxidants need to be added. Antioxidants have two functions. One is to prevent rancid substances from absorbing oxygen, and the other is to oxidize themselves to prevent oil oxidation. The ideal antioxidant should be safe and non-toxic, with good stability, good compatibility with other raw materials, and strong antioxidant effect at low dosage.
Antioxidants in cosmetics can be roughly divided into five categories according to their chemical structure: phenols, amines, organic acids, alcohols, inorganic acids and their salts. Commonly used antioxidants include tocopherol (vitamin E), butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT).
Colorants are raw materials that can impart color to cosmetics and color the skin and mucous membranes, also called pigments. According to different solubility, colorants can be divided into dyes, pigments and lakes. Dyes are compounds that can be dissolved in water or organic solvents to color the solution. According to different solubility, it is divided into water-soluble dyes and oil-soluble dyes. According to different sources, it can be divided into natural dyes and synthetic dyes. Pigments are insoluble in solvents and are compounds that are dispersed in the matrix material to color the product. Common ones are titanium dioxide, zinc oxide, iron oxide, pearlescent pigments and so on. Pearlescent pigments are important pigments used in eye shadow, rouge, lipstick, nail polish and other cosmetics. Lakes are insoluble salts of pigments.
The ideal colorant requires safety, no irritation, no peculiar smell, good light and heat stability, low dosage, and good compatibility with other raw materials. The colorant may have a certain irritation to the skin or mucous membrane, and its use must meet the corresponding restrictions. The “Safety Technical Specifications for Cosmetics” (2015 edition) permitted colorants for cosmetics (Table 6) lists 157 permitted colorants for cosmetics. The content of the list includes colorant index number, colorant index common name, color, colorant index common Chinese name, scope of use, other restrictions and requirements. The selection and use of colorants should follow the relevant regulations in this table.
Essence is a substance used to conceal the peculiar smell of cosmetic raw materials and give products a pleasant fragrance. Essence is a mixture of several or even dozens of or nearly a hundred kinds of spices (natural spices and artificial spices), formulated through certain flavoring techniques, and has a certain flavor and scent. Flavors are also called blended spices. Essence contains different volatile aroma components, which constitute the difference in fragrance type and fragrance rhyme. Some fragrances and fragrances have a certain irritation to the skin and mucous membranes, and can easily cause skin allergies. Therefore, some fragrances, such as dicoumarin, are listed as banned substances in cosmetics. The ideal fragrance for cosmetics should be non-irritating and non-allergenic.
Chelating agents can form complexes with metal ions to eliminate the adverse effects of metal ions on the stability or appearance of the product. Calcium and magnesium ions are incompatible with many kinds of raw materials, which can reduce the transparency of transparent cosmetics, or even become turbid, and can also cause products such as shampoos to precipitate. The iron and copper plasma can accelerate the oxidation of cosmetics and make the product discolor and taste. The complexing agent combines with these metal ions to deactivate them. Commonly used complexing agents include disodium EDTA and tetrasodium EDTA.
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. 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 cosmetics; emulsification, surfactants used in the production of creams and shampoos as emulsifiers; wetting and penetrating effect, such as hair dyes and perms. In contact with the skin, use creams and lipsticks for spreading.
There are many types of surfactants, which 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.
Non-ionic surfactants are surfactants that do not dissociate into ions in water. In cosmetics, there are many varieties and very large dosages. There are two main types of varieties: polyoxyethylene type and polyol type; polyoxyethylene Types of polyoxyethylene fatty alcohol ethers, polyoxyethylene alkyl phenol ethers, polyoxyethylene fatty acid esters, polyoxyethylene fatty amides, etc.; polyol types: alkyl alcohol amides, sorbitan monostearate, etc. ; In cosmetics, emulsifiers, foaming agents, thickeners, and dispersants are mostly nonionic surfactants.