A polymer made out of silicon-oxygen-methyl combination with a high molecular weight, water repellent and low superficial tension. It is used in many ways (dimethicone, simethicone, -see specific items)orally to treat infant colic and flatulence; as pediculicide, in cosmetic creams and lotions and skin protectants as to prevent ulcers and scars; arthroplasties, retinal detachments and reconstruction or cosmetic surgery as injections and implants. Silicone is widely distributed in our environment with several cosmetic and medicinal uses. No evidence of toxicity on human tissues has been shown. A 1994 report on immunological side effects in infants breastfed by mothers with silicone implants, was denied categorically by means of meta-analysis and other work. The absorption by oral or dermal route is negligible. Both a high molecular weight and polymer molecular structure make it practically impossible excretion in the milk and hence a significant amount of intestinal absorption by the infant. Those circumstances make silicone implants safe for lactation even if broken or manufacturing fault (Poly Implant Prothèse, PIP). After extensive analysis of such silicone prosthesis, where lack of health risk was demonstrated, it can be concluded that many of the initial recommendations published lacked scientific validity, including that carriers of such prosthesis should not breastfeed. Silicon levels in blood and milk of women with implants (55 ng / ml) are similar to those of women without implants (51 ng / ml), 13 times lower than that found in cow's milk (709 ng / ml) and 80 times lower than in commercial infant formulas (4403 ng / ml). American Academy of Pediatrics: Product usually compatible with breastfeeding. To view other possible effects on breastfeeding of breast implant unrelated to silicone, see the term 'Augmentation Mammoplasty'. See below the information of these related products: