While silicone is also a synthetic polymer like plastic , it has a different composition and production process. Unlike plastics (a broad term that encompasses a wide range of synthetic materials often derived from fossil fuels) that breakdown over time into Microplastics (which can release toxic chemicals into the environment among other dangers), silicone does not breakdown in this way, and does not release toxins into the environment but rather sits there as a veeeery slowly depolymerizing in