I am against cosmetic surgery unless its for a medical reason like a burns victim. There are many products on the market now days, including natural products, a healthy diet and exercise which can do a great job without the risks. If someone is suffering depression there is usually an underlying reason for this and unless this is dealt with, cosmetic surgery will not improve this medical condition.
There are many risks associated with cosmetic surgery and it can be very costly. If things go wrong, it could leave the person with far worse problems.
If you are going to have cosmetic surgery for whatever reason then thoroughly research the person doing it after you have sought advice for alternative remedies first.