Breast augmentation is cosmetic breast surgery that can increase the size of the female breast. It is one of the most frequently performed cosmetic surgery procedures in the world. A breast augmentation can give a woman with small or unevenly-sized breasts a fuller, firmer, better-proportioned look. In some situations, the placement of a breast implant can also provide a small breast lift. A breast augmentation can be performed using a variety of different techniques. The most common incisions are: Underneath the breast (inframammary), around the areola (periaerolar), or in the armpit (transaxillary). Both saline and silicone implants are approved by the FDA for breast augmentation, however, only saline implants are approved for those patients younger than 22 years of age. Modern silicone implants are filled with cohesive gel that has a consistency that more closely resembles jello or a 'gummy bear' than water. This gel is believed to better prevent silicone migration once the outer silicone cover (shell) has worn out many years after implantation.