Good Afternoon! Alar grafts are typically thin pieces of cartilage which can help push the margin of the nostril downward and create better flow. Sometimes, they are small pieces which don't provide much support. Other times, they can be larger and sutured into place in the form of articulated grafts to the tip. I would not say that they go away. The most important thing is to evaluate the reason for alar graft placement. For very high, arched nostrils, they often don't provide enough support and composite grafts from the ear are better. Or, lateral crural struts with repositioning of the lower lateral cartilages as another option. Hope this helps!