At present, more and more shampoo products are labeled "silicone free". What is the role of "silicone oil" in shampoo? Is shampoo without silicone oil really healthier? Today, I'll solve this mystery for you.


What is the effect of adding silicone oil to shampoo products


Silicone oil is a kind of polyorganosiloxane with different degree of polymerization and chain structure. The most common silicone oil component in hair care products is polydimethylsiloxane, which has stable structure and strong moisturizing effect.


When washing hair, after the excess oil on the hair is washed, the hair is easy to knot and difficult to comb. At this time, silicone oil can play a role: first, it can be evenly distributed on the hair surface and attached to the hair scales to fill the concave convex on the hair surface and make the hair smooth and smooth; The second is to reduce the friction damage of hair scales during shampoo, increase the toughness of hair, maintain the moisture content of hair and make the hair more shiny.


There is no evidence that silicone oil causes hair loss


Many people may be concerned that, as rumored, the silicone oil in shampoo products will block scalp pores, leading to allergy and even hair loss?


In fact, high-purity silicone oil is difficult to be absorbed by the skin and is almost non-toxic. The American cosmetic raw material evaluation committee (CIR) believes that silicone oil can be safely used in cosmetics. The use limit is as follows: in hair cosmetics, the limit value is 80% (that is, the silicone oil content accounts for less than 80% of the total quality of hair products), and in other cosmetics, the limit value is 24%.


The hydrophobic film formed by silicone oil on the scalp is breathable and will not block the pores of the scalp. In addition, during shampoo, most silicone oil will be washed off, and will hardly remain on the hair follicle, let alone be absorbed by the hair follicle.


Therefore, there is no evidence that silicone oil can sensitize, acne, block scalp pores and lead to hair loss.