What is the ruling on performing a cosmetic procedure to reshape a nose that is unusually long or large, and on removing expressive wrinkles from the forehead, given that I am young and both procedures are non-surgical and temporary?

We do not know how excessive nose length can be treated without surgery. If the nose is long to the point of disfigurement, a cosmetic surgery may be performed to restore it to its natural appearance. However, if its length is normal, the surgery is not permissible. As for facial wrinkles, if they arise from a medical condition, it is permissible to remove them with surgery or injections; otherwise, it is not. Regarding treatment with non-surgical and non-permanent methods—such as using creams—some scholars have held that this is permissible, because the forbidden alteration is that which remains on the body.