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Silicone structural properties
The rapid development of silicone in the cosmetics industry is mainly due to its unique molecular structure. Organic silicon is a polymer compound with a semi-inorganic and semi-organic structure, showing a spiral structure in space. This determines that it has many excellent properties: lubricity, hydrophobicity, physiological inertness, resistance to ultraviolet radiation and compatibility, etc., which provides various possibilities for improving the performance of cosmetics.
Silicone materials have entered the field of cosmetics and have undergone rigorous toxicology research. It has been confirmed that this type of material has no toxicity in the oral test, no allergies in the skin irritation test, no damage in the eye irritation test, no abnormality in the inhalation toxicity test, no poisoning in the gastric absorption and metabolic functions, no adverse effects in the genetic test, and no environmental impact test. bioconcentration phenomenon.
Silicone oil is a colorless and odorless transparent liquid. It is one of the least toxic products in cosmetics. It is non-irritating, non-allergenic, non-tingling, and has a neutral reaction to human skin. It is an excellent material for modern cosmetics. There is a large distance between silicone oil molecules, the molecular force is much weaker than that of hydrocarbons, the surface tension is low, and it has high surface activity. Therefore, silicone oil has excellent defoaming and anti-foaming properties and good film-forming properties. It can easily form an extremely thin film and is used in cosmetics. When applied to human skin, it is like covering a layer of extremely thin gauze mask and achieves protection. Skin effects. Silicone oil is hydrophobic and insoluble in water. Silicone oil has excellent isolation and lubricity from other substances, and has moisture barrier properties without affecting breathability. Has a high degree of gloss, making the skin brighter. Moreover, silicone oil has excellent compatibility with other cosmetic raw materials.
Common applications of silicone oil in cosmetics
Polysiloxane | Characteristics | Usage |
Dimethylpolysiloxane | Combing | Shampoo Two-in-one Wash and Conditioner
|
Methylphenyl Silicone | Compatibility | Hand Balm, Lipstick |
Cyclodimethicone | Volatile | Antiperspirant, lotion |
Methyl hydrogen polysiloxane | Hydrophobic | Powder treatment, foundation |
Polyether modified silicone | Emulsifying | Shampoo, conditioner |
Betaine modified silicone | Foaming | Low irritation shampoo |
Silicone gel | Feel, Spreadability | Foundation |
Amino-modified silicone oil | High reactivity and adsorption | Hair care products |
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