Silicone is the 3rd ingredient found in shampoo and it can be dangerous for your health. It also assumes other names such as Dimethicone, Methicone, and Hydrogenated Silica, etc. However, Silicone’s synthetic form is used in shampoos and many beauty products for its water-repelling properties and to make the hair shiny and sleek.

Is silicone in shampoo bad for the environment? As far as effects on health are concerned: Silicone coats your hair strands and prevents them from getting wet (which is the main purpose of rinsing the shampoo off your hair).