(Antioxidant) In order to prevent oily components such as oils, waxes, hydrocarbons and other oily components in cosmetics from contacting oxygen in the air to undergo oxidation reaction, generating peroxides, aldehydes, acids, etc., and causing cosmetics to discolor and deteriorate, antioxidants need to be added to cosmetics. .

Second: antiseptic and antifungal agent
It is necessary to add preservatives in order to inhibit the proliferation of microorganisms that may be caused in cosmetics and the second contamination of consumers when using them. The requirements for preservatives used in cosmetics are: do not affect the color of the product, no peculiar smell, non-toxic within the normal range, non-irritating to the skin, do not affect the viscosity and pH value of cosmetics, and have a relatively wide antibacterial spectrum. , effective against a variety of microorganisms.

It is necessary to add preservatives in order to inhibit the proliferation of microorganisms that may be caused in cosmetics and the second contamination of consumers when using them. The requirements for preservatives used in cosmetics are: do not affect the color of the product, no peculiar smell, non-toxic within the normal range, non-irritating to the skin, do not affect the viscosity and pH value of cosmetics, and have a relatively wide antibacterial spectrum. , effective against a variety of microorganisms.

The natural moisturizing factor (NMF) exists in the stratum corneum of human epidermis to keep the skin moist. Cosmetics (especially emulsion cosmetics) are products specially used to adjust the skin. Its function should be the same as that of the sebum film, so it is often developed with the sebum film as the standard, so there is also a substance (humectant) that simulates the natural moisturizing factor of the skin. .

(Emulsifier) ​​A base cosmetic is composed of oil and water, and a substance that functions to mix oil in water or water in oil without separating them is a surfactant. The types of surfactants are nonionic active agents, anionic active agents, cationic active agents and amphoteric active agents. The addition of surfactants to cosmetics can achieve various functions such as washing, wetting, emulsifying, dispersing, solubilizing, and foaming.

Acids, alkalis, and salts are often added to cosmetics to adjust pH.

Some fragrances are often added to cosmetics to make cosmetics have an attractive fragrance and cause users to feel happy. The raw materials of essence are plant, animal and synthetic. Flavor is generally composed of a variety of ingredients.

In order to make cosmetics have a pleasing color and luster and be easily accepted and loved by people when applied on the skin and hair surface, some pigment ingredients are often added to cosmetics.

In order to make cosmetics have a certain special effect, some special additives are often added to cosmetics, such as: vitamins (A, B, C, D, E, etc.), hormones (estrogen, androgen, adrenal cortex hormones), phospholipids ( Egg yolk oil ingredient, which can promote skin metabolism), anti-inflammatory agent (zinc oxide, adrenocortical hormone, etc.), whitening agent (hydrogen peroxide, sedimentary sulfur, etc.), ultraviolet absorber, placenta extract (with the effect of reviving cells) , Queen Bee Essence (promoting skin metabolism, supplementing nutrition), allantoin (promoting cell growth, sterilization, preventing sweating), Chinese herbal medicine and folk medicinal infusions (licorice, aloe, ginseng, angelica, etc.), natural plants, vegetables, fruits extracts, etc.