Except for baby products, almost all shampoos in supermarkets contain silicone oil. Why should silicone oil be added to shampoo? Will silicone oil block hair follicles and damage hair.

Silicone oil has viscosity and extensibility, which has moisturizing and softening effects on hair. Hair grows from hair follicles in the scalp, and the main component is keratin. There are many uneven scales on each hair. When the hair scales are damaged, they will rise up, increasing the friction between the hair and causing the hair to tangle together. More friction exacerbates the damage to the hair scales.

When washing hair, the silicone oil in the shampoo adheres to the gaps in the hair scales, making the surface of the hair smooth and smooth to the touch. The purpose of washing hair is to remove dust and excess oil from the hair and scalp. But when washing hair, it absorbs water and expands, becoming moist and soft, and the protective oil outside the fur is also washed away. The anionic surfactant used as a raw material for shampoo, after cleaning the dirt on the head, itself adsorbs onto the hair under the action of water. After the hair is dried with moisture, it explodes due to same-sex repulsion. If you use a plastic comb to comb at this time, it is easy to generate static electricity.

The problem of anions can be comprehensively solved with cations, such as quaternary ammonium salt cationic surfactants. But none of these can solve the problem of hair scale damage. The chemical reagents, heat, and ultraviolet rays of the sun used when dyeing and perming hair can further harm the hair. Later, it was discovered that oil can solve this problem, as it lubricates hair and reduces hair damage during grooming. It can be found that the osmanthus oil and conditioner used by people in the past were mainly oils. Polydimethylsiloxane can attach well to hair due to its inertness and adsorption, filling the damaged areas of hair scales, making the surface of hair smoother, which is also known as the repair effect. Hair that has been used with silicone shampoo is brighter, easier to comb, and stronger, smoother. Polydimethylsiloxane can also maintain stable hair moisture content through a formed protective layer.

Regarding silicone oil, please check the following details:
https://www.htvsilicone.com/product-vinyl-silicone-oil-iota273.html