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What are the effects of the various ingredients in the cosmetic ingredients list?

2019-11-02 5

The common ingredients in the cosmetic ingredients list can be roughly classified into seven categories.

(1) Matrix components

This type of ingredients is relatively large, usually the top ingredient in the full ingredient list. Because they are the medium of the active ingredients of cosmetics, they are usually contained in the top of the ingredient list, such as water, ethanol, mineral oil. Vaseline and so on.

(2) skin care ingredients

Many of the cosmetics are ingredients that have a protective effect on the skin. They are chemically diverse and function through different principles to care for our skin and help the skin to be more hydrated, firm, smooth and bright. Such as hydrating glycerin, hyaluronic acid, collagen hydrolysate, etc., can repair the stratum corneum ceramide, vitamin E, etc., can help exfoliate salicylic acid, keratinase, etc., antioxidant superoxide Disproportase (SOD), vitamin C derivatives, etc., can moisturize the skin of jojoba oil and shea butter.

(3) Hair care ingredients

It includes ingredients that help the hair to be supple, such as polydimethylsiloxane (silicone oil), quaternary ammonium salt, vitamin E, etc.; ingredients that help to remove swarf, such as zinc pyrithione, salicylic acid, etc.

(4) pH adjustment components

Our skin and hair are weakly acidic under normal conditions. The pH of the skin is about 4.5 to 6.5 (7 is neutral, less than 7 is acidic, more than 7 is alkaline), and the acidity and alkalinity of the hair is neutral and weakly acidic. . In order to maintain the normal pH of the skin and hair, cosmetics need to maintain a certain degree of pH, but this does not mean that cosmetics must be within the pH range of the skin. Some alkaline products can be better cleaned, and some acidic products can better help the skin to self-renew. The principle is that cosmetics can not excessively damage the skin's own acid-base balance. Commonly used acid-base regulators are citric acid, phosphoric acid, tartaric acid, sodium dihydrogen phosphate, triethanolamine, and the like.

(5) Preservatives

Commonly used are methylparaben, hydroxyphenyl ester, hydroxyphenylethyl ester, isobutyl hydroxyphenyl ester, hydroxypropyl propyl ester, potassium sorbate, sodium benzoate, triclosan, benzalkonium chloride, methyl chloroisothiazole Linoleone, methyl isothiazolinone, phenoxyethanol, chlorophenol glyceryl ether, sodium dehydroacetate, and the like.

(6) Colorant

Pigments in cosmetics are not marked with a specific name, usually identified by a number, such as CI77491, etc. If the colorant does not have an index number, the Chinese name can be used.

(7) Cleaner

Cleaning is a big function of cosmetics. The main function is the surfactant. Such as shampoo propyl betaine, sodium lauryl sulfate and sodium laureth sulfate commonly used in shampoo products and shower gels; sodium lauroyl glutamate and lauroyl sulphate commonly used in amino acid facial cleansing milk Sodium citrate, sodium lauroyl collagen, amino acid, etc.; natural fats and oils (fatty acids) commonly used in cleansing creams, and sodium hydroxide, potassium hydroxide (a soap formed by the reaction of fatty acids with sodium hydroxide or potassium hydroxide as a cleaning agent).