Human hair is composed of three components, the center is the hair medulla, then the fur cortex, and the outermost is the hair skin, which is mainly composed of dead cells rich in keratin, also known as hair scales.
The surface of the hair scales is a hydrophobic film, when the hair scales are damaged, the hydrophilic layer of the hair skin will be exposed, so that the moisture is lost, and the processes of combing, perming, and dyeing will further aggravate the exposure of the hydrophilic layer.

This layer of hydrophilic substances is very weak in resistance to chemicals, which can easily cause the loss of moisture inside the hair, drying the hair, reducing strength and elasticity, splitting the ends and losing its luster. At the same time, dry hair is prone to static electricity, which is not only difficult to set and difficult to comb, but also makes the hair more susceptible to damage.

Silicone oil mainly acts on the outermost hair scales to protect the hair scales from damage. Here's what silicone oil does to hair:
(1) Make hair smooth.
Silicone oil has very low surface tension and has good stretchability, water resistance and lubricity, these properties allow silicone oil to evenly cover the hair surface and form a dense hydrophobic protective film, making the hair surface smooth and smooth, reducing the friction between hair and hair, so that it is easy to comb.

(2) Protect hair.
When perming or blow-drying hair, the temperature of the hair rises, which can take away moisture, causing the hair to break and split ends. The protective film formed by silicone oil products on the surface of the hair can effectively reduce water loss and heat damage, and also help to smooth the stratum corneum.

(3) Brighten the luster.
Smooth, well-arranged hair reflects the sun's rays better, resulting in a shinier appearance and less damage from UV rays than untreated hair.

(4) Prevent static electricity
In addition, the antistatic ability of polydimethylsiloxane can make the hair smooth and prevent the hair from "flying".