Rhinoplasty for Sebaceous Nose?

Excessive sebaceous gland growth that produces a large bulbous nose (like Jimmy Durante or WC fields) is called Rhinophyma.
If you have this condition a traditional rhinoplasty will not improve the shape of your nasal tip. Removal of excessive sebaceous material from the tip and bulb requires external removal of the excessive sebaceous tissue.
The ala and tip (bulb) of the nose can be sculpted using a wire loop cautery and CO2 laser.
This procedure leaves the nose skin raw, new skin grows over the nose in 10 to 14 days.
This is the only method I have found which can reduce the size of the bulb in patients with Rhinophyma.
Attempts at Rhinoplasty which modifoes the structures under the nasal tip (bulb) are uniformly disappointing failures.

Rhinoplasty is not performed for sebaceous oily skin. A rhinoplasty operation is designed for sculpting the bone and the cartilage of the nose and is not skin surgery. The skin itself is lifted up, and the bone and cartilage are sculpted to the anatomical shape and the skin put back down. If you have a rhinophyma, the thickness of this can be reduced in size with dermabrasion.

Hi,
I agree with the other surgeons. Thick, oily skin is not likely to result in a very refined tip. However, there are options and all hope is not lost.
Depending on your skin, during surgery the under surface can be thinnned out or "de-fatted."
Structural grafting and suture techniques also are often used in thicker skinned patients to give them very nice improvements in their tip.
Computer imaging to see what exactly is realistic as far as outcome is paramount. You have to see what is possible before you go through any surgery. If you like what you see then you can consider proceeding but if you think the imaged picture's tip is just not as narrow or refined as you had hoped, well then you don't have to go through surgery.
Now for the big one: Accutane, which is a very serious medicine used for severe cystic or nodular acne can usually thin out the skin and reduce the oil glands very nicely! The problem is that the medicine itself can have very serious side effects and no one in the U.S. will prescribe it for the purpose of getting a more refined nasal tip but it is used in other parts of the world for this purpose. I would not recommend you doing it but it is an option you should be aware of.
The important thing is to know that the old methods of cartilage excision to narrow the tip do not work on patients with thick oily skin and usually end up making the tip more amorphous and round in the long term.
Good luck.