Daquan of silicone oil for cosmetics
The characteristics of cosmetics containing polysiloxane are as follows:
(1) it has good lubrication performance. After coating the skin, it can form a layer of even waterproof protective film, but it does not have any sticky and greasy feeling and has good luster.
(2) it has good anti ultraviolet radiation performance. It will not oxidize and deteriorate under ultraviolet radiation, causing skin irritation.
(3) it has good antistatic property. The test shows that the static electricity of the skin which has been rubbed with polysiloxane cream can be eliminated completely, and it has obvious dustproof effect.
(4) good air permeability, even the formation of siloxane film on the skin does not affect sweat discharge. It has a slow release effect on flavor and fragrance, and therefore has a longer aroma retention period.
(5) high stability, chemical inertness, no adverse effect on other components of cosmetics, especially active ingredients, and good compatibility.
(6) it is non-toxic, odorless and tasteless, which will not cause irritation and allergy to the skin. It has high safety and certain curative effect on some skin diseases, such as eczema with sweating difficulties, neurodermatitis and occupational dermatitis.
Silicone oil is generally divided into ordinary silicone oil and modified silicone oil. Up to now, silicone products have been successfully developed for cosmetics, including polymethylmethylene siloxane, Polymethylphenyl siloxane, methyl hydrogen containing silicone oil, polyether modified silicone oil, long-chain alkyl modified silicone oil, cyclic polysiloxane, amino modified silicone oil, carboxyl modified silicone oil, polymethylsiloxane emulsion, silicone, silicone resin, etc. Two. Organosilicon treated powder series.
(1) dimethylsilicone oil
The structural formula of dimethylsilicone oil is:
Dimethylsilicone oil is a completely methylated linear siloxane polymer. With the increase of carbon atom number, the properties of dimethylsilicone oil such as heat resistance and cold resistance decrease, but the compatibility of organic properties such as lubricity and coating with organic resin increases. Dimethyl silicone oil itself is colorless, tasteless, non-toxic, non skin sensitization, and has a high affinity for the skin. When applied in personal care products, it can have a unique soft and smooth feeling, not greasy, not clogging pores. As a carrier, it can give personal care products a better texture.
In the cosmetics industry, the excellent performance of dimethylsilicone oil makes it have outstanding performance in facial and skin products, beauty cosmetics, hair care products, antiperspirants and aromatics.