According to Guoke.com, the “silicon” contained in shampoo does not actually refer to silicon alone, but to dimethicone, commonly known as silicone oil. Silicone oil is the common name for polydimethylsiloxane (PDMS), which is liquid at room temperature. It is also called “silicone”. As the degree of polymerization increases, there will also be solid PDMS. Regardless of their state, all PDMS are a type of substance with the same structure.
Reporters found that as early as 2011, Guoke.com’s “Rumor Smasher” channel had made a scientific response to the claim that “shampoos containing silicone oil cause hair loss and hair loss.” Guoke.com wrote that the Cosmetic Ingredient Evaluation (CIR) expert panel believes that silicone oil is safe for use in cosmetics and is not irritating to the skin. Although it forms a hydrophobic film on the skin, it is also breathable. “In the process of searching the literature, I couldn’t find any information related to it causing acne, acne, hair loss, or allergies. Instead, it is often used to label acne free (non-acne) or oil free (oil-free). products. This is also its advantage over traditional oils.”
The final conclusion reached in the above-mentioned article of Guoke.com is that PDMS can smooth hair scales and reduce friction damage to hair. The timely or long-term benefits are obvious. On the contrary, speculation that it is harmful to the scalp has not been confirmed.
