Our patches are made of 100% medical grade silicone made up of Dimethicone, Silica, Hydrogen Dimethicone, Stearic Acid. All SiO patches are free from: Gluten, Dairy, Alcohol, BPA, Benzalkonium chloride, BHA, BHT, Coal Tar, Dyes, EDTA, Ethanolamines, Formaldehydes, Isothiazolinones, Oxybenzone, Parabens, Phlalates, SLS, SLES, Synthetic Flavors or Fragrances, Triclosan, and Triclocarban.