Should my nostrils be uneven after 6 months rhinoplasty including alar base reduction? (Photo)

Uneven nostrils at six months: it usually takes a year to see the final result of the tip and nostrils. Swelling can distort the appearance in the short term. Part of the asymmetry in your case appears to be a tilt to the right of the columella which is the vertical strut between the two nostrils. This tilt is often due to a deviated septum. To answer your question as to whether it will improve with time look at your preop pictures taken from beneath the nostrils. If in your preop photo the columella tilted to the right as it does appear to now then you probably had a deviated septum and still do, in which case it might not improve. If however your nostrils and columella appeared straight and symmetrical before surgery there is a chance that they will continue to improve with time.

I appreciate your question and your photo. It is very difficult to create perfect symmetry between the nostrils during this surgery. That said, it is difficult to tell at this point whether your results will continue to change as your recovery progresses. At this point, no surgeon is likely to consider a revision procedure, since it can take up to one full year for all the swelling to go down. At that time, you can schedule a consultation with an experienced, board-certified facial plastic surgeon to review your case and create a customized treatment plan to improve your results if appropriate.

It is asymmetry but keep in mind mild asymmetry is common and does not effect the beauty of the nose. People look at your face from front. If it is not easily noticeable from front then you are ok.
Regards
Dr. J