Drooping nasal tip is a term used to describe downward movement of the nasal tip with smiling. More severe forms of this include shortening of the upper lip with the appearance of a horizontal crease and elevation of the outer lower edge of the nostril in the same motion.
Drooping Nasal Tip With Upper Lip Shortening and Horizontal Crease on Smiling
This appearance is created by the actions of the levator labii superioris alaeque nasi and depressor septi nasi muscles.

Muscles That Cause Drooping Nasal TipThe treatment is to prevent the actions of the muscles. This is achieved by cutting the depressor septi nasi via an incision in the floor of the nose or the inside of the lip and transecting the outer portion of the tip cartilage with a portion of levator labii superioris alaeque nasi so that it can no longer raise the outer lower edge of the nostril.

The commonly performed trimming of the tip cartilage also helps to rotate the tip upward.

Rhinoplasty
Correction of the Pinched Nasal Tip
Aaron Stone MD – Plastic Surgeon Los Angeles
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