In general, most rhinoplasty patients reach a plateau in their healing after 1-2 years. That being said, I have many patients in my practice who have taken up to 3-4 years before their noses settle completely. Most of these rhinoplasty patients have fairly thick, ethnic skin that simply takes that long to thin and shrink wrap down to the new shape. If you have some asymmetry of the nasal tip after three years, you might benefit from undergoing a revision procedure. This may or may not involve formal surgery to create more symmetry. In some cases cartilage grafting is necessary to achieve the desired results, whereas in other cases some form of a permanent filler can be used with successful outcomes. Make sure you consult with a rhinoplasty surgeon who is experienced in revision cases.