Personal care silicone oil, as the core ingredient in cosmetics and personal care products, with its unique chemical structure and physical properties, has become a key element to improve product performance and user experience.Its core ingredient is polysiloxane (silicone oil or silicone), which has the characteristics of physiological inertness, high chemical stability, odorless, non-toxic and non-irritating to the skin. It is widely used in skin care, hair care, makeup and medical equipment.


Core features and functions
Lubrication and smoothness: Silicone oil significantly reduces friction by forming a uniform film on the surface of the skin or hair.For example, dimethyl silicone oil (polydimethylsiloxane) can provide a skin feeling from refreshing to moisturizing depending on the viscosity. High-viscosity products are even used in scar repair creams to enhance the silky touch; amino silicone oil added to conditioners can deeply repair damaged hair and make hair supple and easy to comb.
Gloss enhancement and antistatic: The film-forming properties of silicone oil make the surface of the hair smoother and enhance the ability to reflect light, thereby improving gloss.At the same time, its antistatic properties can reduce hair frizz, especially suitable for dry seasons or easily knotted hair.
Protection and moisturizing: The protective layer formed by silicone oil can isolate external moisture, heat damage and pollutants, and reduce the evaporation of skin moisture.For example, low-viscosity methyl silicone oil can prevent dry and cracked skin in winter skin creams, while the silicone oil in hair care essential oils can lock in hair moisture and maintain elasticity.
Formula compatibility: Silicone oil can be combined with water, ethanol and most organic ingredients, and it is highly scalable.For example, polyether-modified silicone oil is soluble in water and is suitable for adding to skin care water; phenyl silicone oil can enhance the gloss of the cream and enhance its solubility.
Typical application scenarios
In the field of hair care: Silicone oil is the core ingredient of shampoo, conditioner and hair mask, which achieves a “false slip” effect by filling the gaps in the hair scales.High-end hair care essential oils often use quaternary ammonium salt modified silicone oil or polypeptide modified silicone oil to provide deep repair.
In the field of skin care: low-viscosity silicone oil is used in serums and creams to improve stickiness, while high-viscosity silicone oil is used in lipsticks, eye shadows and other makeup products to enhance color fastness and ductility.
Special care: In medical devices, silicone oil is used to fill the eyeball after eye surgery to maintain the position of the retina; in the field of pesticides, modified silicone oil as an extender can improve the absorption rate of the eye to the agent.
Disputes and precautions
Although the safety of silicone oil has been widely recognized, long-term use may lead to residual accumulation and cause “false slippage” controversy.Some consumers prefer silicone-free products and instead choose alternative ingredients such as liquid paraffin wax and glycerin.In addition, the use of silicone oil after eye surgery must strictly follow the doctor's instructions and avoid rubbing eyes or strenuous exercise to prevent infection.