There are many factors that can cause implants to settle too low, become inferiorly displaced or bottom out. The patients that are most at risk are ones that have very thin and loose breast tissue (usually after multiple pregnancies and breast feeding). These patients don't have much intrinsic support to help hold the implants in place after surgery. If they are involved in certain types of activities that stress the natural support of the breasts (such as a lot of running, jumping, ect.) and don't wear a good support bra regularly, their implants will tend to drop or bottom out more. Also if they go with very large sized implants, that will require that the implant pocket be made larger and thus will usually obliterate their original inframammary fold and lose natural support of their breasts, causing more bottoming of the implants. Sometimes if the implant pocket is dissected too far inferiorly or laterally during the surgery, this will cause the implants to settle too low and/ or too lateral. Wearing a breast bandeau for an extended period of time when it is not necessary could potentially apply too much downward force on the implants, causing them to drop too low. How long you should wear the bandeau totally depends on your individual case and how you are healing. Your PS typically follows you closely after your surgery to determine if you 1) need the bandeau at all or 2) if you do, how long do you wear it for. I would recommend you follow up with your PS and let him/ her know of your concerns. Best wishes.