Breast augmentation is generally undergone by women wanting to increase their breast size for various reasons, in some cases breast augmentation is used to even out breast sizes. Breast augmentation surgery has proved a reliable way of doing both these things. Saline implants have valves that enable them to be “topped-up” which means they are suitable for usein patients that want a dramatic size increase that will need to be undertaken in stages. In Manhattan breast augmentation clinics, there is now also a choice of implant shape with the introduction of teardrop-shaped implants which are intended to give a more “natural” breast shape, however the incisions to insert these need to be larger than those needed for round implants as they are much less flexible. Making the decision of silicone or saline is next. Silicone implants have been used in breast augmentation surgery in Manhattan since the 60’s and have the benefit of being long-standing and therefore well tested and modified. Silicone implants are very hard-wearing with very little danger of rupture or leakage, they also provide a natural look and feel as silicone gel feels remarkably similar to body fat, the main component of natural breast tissue. Saline implants have a thick silicone shell, but are filled with a salt water liquid. Saline implants require smaller incisions than their silicone counterparts as they are filled once they have been inserted. The shell has a valve that a filling tube is attached to, once the implants have been filled the tube is rmeoved and the valve closes sealing the shell of the implant. One of the benefits of filling the implants once they have been inserted is that it enables the surgeon to even out the size of the breasts, perfect for those looking to balance the size of their breasts through breast enhancement. Saline implants don’t feel quite as natural as silicone implants thanks to the malability of the gel used in silicone. There is also the risk with saline implants that they will wrinkle, which can be visible on the breasts, especially on skinny women. Saline implants have been known to completely deflate, in which case a replacement implant would be required. They also have a greater risk of leaking than silicone implants. The body easily absorbs saline as it is a harmless substance which can be dealt with quickly.