If we think about the start of plastic surgery. It was used as a reconstructive surgery. It is a gift for those who get some facial injuries in accidents etc. Or burn marks.
Now the cosmetic surgery is purely for the beauty or personality enhancement purpose. Say if someone undergo a nasal surgery, it will not enhance any function of the nose but enhance the look of face. As well in fashion, we see that the hip hop music and such videos made a trend for young generation to put themselves under the knife and take risk.
Some awesome examples are, where young people got fatal results of cosmetic surgery. Such as in the breast implants. So it is wise to get all necessary information about these procedures and parents also care their teens before making such decisions.