The edge of the alar should be a harmonious arc, not too high, too low, too straight or asymmetrical. When the alar droops, it can be manifested as the front, back or all alar edges drooping, which can cover the columella from the side view, forming a false columella invagination deformity, which should be distinguished from the true columella invagination. Thin alar plastic surgery is to thin alar.

I hope my answer can help you. I wish you good health and a happy mood!