Thank you for your question. The NINE method of nipple inversion is really just an extension of the current technique that most surgeons use which involves a stab incision in 4 points around the nipples. The advantage that the authors of the NINE method state is no scar other than that left with the needle. They also show that the suture dissolves on its own. The suture they use is a dissolvable suture that does not need removing. The technique itself is not difficult to carry out but I think it misses an important part of the nipple eversion which is the ducts that are pulling the nipple in. The authors of this technique show their very good results but all of these are at 1 month. Most nipples will still be quite swollen during this time and really you would get a better idea at 3- 6 months as to recurrence. The scarring that builds up underneath the nipple may be enough to hold the nipple up but if there is increased eversion, then this will probably pull in over time. In terms of the technique of nipple eversion, I use a similar technique but make 4 stab incisions around the base of the nipple. This allows two things to occur (1) the ducts can be released from under the nipple (2) the stitch that is placed will have the knot buried and not left on the outside (which is the case with the NINE technique. In all the nipple eversions that I have carried out, the scarring is not obvious and is quite discrete as it is at the base of the nipple. The results tend to last longer with addressing the ducts. I like the idea of the NINE technique but I have not seen any long term results with this other than the month after surgery, although the authors do claim no recurrences. There are published articles saying there may not be a difference between addressing the ducts or not but in these articles, it did also depend on the extent of eversion. Therefore I think it really is a case of having the nipples examined and addressing your concerns during the consultation. As far as the NINE procedure goes, this is not a difficult technique to carry out but might not be the best option for all patients. The procedure is carried out under local anaesthetic in both cases whether it is a minimally invasive or NINE technique. I hope this is helpful for you BWRohit Seth Plastic, reconstructive, aesthetic and hair transplant surgery.