The first silicone breast implant was devised by Thomas Cronin, and Frank Gerow in Texas in 1961 and inserted in 1962. It is important to understand that the outer shell or envelope of all breast implants has mainly been made of silicone. However, the actual filling substance has differed through the years, giving rise to various types of implants including saline (salt water), sugar & salt gel (Hydrogel) pure silicone gel which is divided into simple or cohesive gel (i.e. McGhan) and Soya oil (Trilucent). Silicone gel implants are currently the most common type used in Europe. Currently in America Saline breast implants are the most common, however following the decision of the FDA in November 2006 this is anticipated to change in favour of Silicone gel implants in the very near future. In Europe current sales figures show a distribution of 85% silicone, 15% saline. As modern silicone gel implants have been available since 1962, surgeons therefore have over 45 years of experience with these types of implants. This is more than any other type in use. Evolution has brought changes and improvements over the years with the introduction of textured surface envelopes made of newer formulations designed to minimise the “bleed” or diffusion of what is usually tiny amounts of the silicone oil fraction of the gel contents. Importantly the standard silicone gel by most accounts, arguably “feels” the most natural of all breast implants. This is probably as a result of the inherent smoothness of the silicone gel content.