Thanks Good4130 for your question! Surgery is typically the only option to get a predictable, semipermanent, or permanent outcome for someone who is particularly aiming for a half-inch projection or a bigger diameter. A Board Certified Plastic Surgeon can increase the size of the nipple by using fat grafting, which involves transferring fat from another area of the body, or dermal fillers, such as Juvederm. Plastic surgeons can perform structural surgery to "lift" the nipple tissue and increase its projection by using internal sutures or tiny grafts. The procedure is called Nipple Lift or Breast lift (Mastopexy) procedure. Hope this was helpful! Best wishes, Dr Ali Sajjadian