What is silicone oil
Silicone oil generally refers to a linear polysiloxane product that remains liquid at room temperature. Generally divided into two types: methyl silicone oil and modified silicone oil. In the structural formula, R1, R2, and R3 can be the same organic group, or they can be different organic groups, such as methyl, ethyl, phenyl, vinyl, methoxy, ethoxy and hydrogen.
The most commonly used is dimethyl silicone oil, also known as polydimethyl siloxane, its organic groups are all methyl groups, methyl silicone oil has good chemical stability, insulation, and good hydrophobic properties.
Silicone oil is Dimethicone
Rumors about silicone oil
1. Silicone oil is insoluble in water, has a high oil content, and is difficult to rinse off. It "holds" the hair tightly and fills up the gaps in the hair scales, causing clogged hair follicles and even hair loss;
2. Silicone oil may cause a decline in human immune function or cause cancer;
Real simethicone toxicity
There is no obvious acute and chronic poisoning reaction to humans and mammals, and no mutagenic and carcinogenic effects.
No matter oral, inhalation or skin contact, there is no obvious irritation or allergic reaction to eyes and skin, and it is not absorbed by gastrointestinal tract and skin.
For the silicone oil in the shampoo, it can reduce hair damage, fill the damaged parts of the hair scales, and make the hair smoother.
Some irritating chemicals in the shampoo that cause hair loss and itchy scalp are:
Ingredients that cause "off" and "itch"
Lauryl ether sulfate, methyl isothiazolinone, methyl chloroisothiazolinone, DMDM hydantoin, imidazolidinyl urea, sodium benzoate, ZPT, zinc pyridine thione, zinc pyrithione, Omedin zinc, vitality zinc, etc.
When buying shampoo, you must be optimistic about whether there are these ingredients, remember!
Silicone oil use
1. In the electromechanical industry, silicone oil is widely used in motors, electrical appliances, and electronic instruments as an insulating medium that is resistant to temperature, arc corona, corrosion, moisture, and dust. It is also used for scanning transformers, capacitors, and televisions. Impregnant for transformers, etc. Used as liquid shockproof and damping material in various precision machinery, instruments and meters;
2. Due to the non-stickiness of silicone oil with rubber, plastic, metal, etc., it is also used as a release agent for various rubber and plastic products molding and processing, and used in precision casting. Using it as a mold release agent is not only convenient for mold release, but also makes the surface of the product clean, smooth and clear;
3. Because this product has low surface tension and is insoluble in water, animal and vegetable oils and high-boiling mineral oils, it has good chemical stability and non-toxicity. As a defoaming agent, it is widely used in petroleum, chemical, medical, pharmaceutical, and food processing. , Textile, printing and dyeing, papermaking and other industries;
4. Dip coating a layer of silicone oil on the surface of glass and ceramics and heat treatment at 250-300℃ to form a semi-permanent waterproof, mildew and insulating film. Used to treat insulating devices can improve the insulation performance of the device: use it to treat optical instruments to prevent molds and prisms;
5. As additives: brightener for paint and ink, machine polishing oil.
6. In medical and health care, it is used as a prosthesis product for breast augmentation of women, oral gastrointestinal anti-expansion tablets, pulmonary edema antifoaming aerosol, plaster, blood reservoir, etc.
