Fat Injections on the Nose?

The subcutaneous layer of fat that envelopes the nasal cartilages is thin and uniformly distributed. Fat transfer can be theoretically performed on the nose but is not technically easy or clinically reliable as a method to improve skeletonization of the nose.

Most plastic surgeons would be very reluctant to inject fat into the nose as a definitve treatment due to the difficulty in predicting take as well as the relative thin layer of tissue covering the nose.
The use of fillers ("non-surgical rhinoplasty") may be a way of assesing the value of performing fat injections but this would remain a relatively unpopular method of treating nasal irregularities.

I believe that in secondary Rhinoplasty, basicaly when dorsal augmentation is necessary due to over resection (the most common deformity after primary) Fat grafting is an amazing tool. I desagree that is technically difficult. It is very easy to do, and help to make thicker the dorsal envelope. Fat grafting to the nose should be always an option.

The thin skin and fine features of the nose makes this procedure a lesser choice than other fillers for correction of nasal contours. 

I suggest Radiesse or Juvederm to correct these types of problems.

All the best.

While it is probably safe to fat inject the nose, it would probably be technically very difficult because of the very thin subcutaneous plane in which the fat would be injected.