The factor is, there is not actually a set definition—it is extra of a colloquial distinction, and there are some conflicting opinions. “Fine strains are sometimes thought of to be child wrinkles,” says board-certified dermatologist Joshua Zeichner, M.D., because the faint etchings can mature into deeper folds in a while. “Others contemplate them to be separate entities, not associated to facial features however extra a operate of UV mild,” he provides, since UV rays alter the underlying elastic construction within the pores and skin, which may trigger superb, tissue-like creases (aka crepey pores and skin).
But once more, there isn’t any onerous rule to separate the 2 in dermatology. “If you get 5 dermatologists in a room, you may seemingly get 5 completely different opinions on what constitutes a wrinkle versus a line,” provides Zeichner. Of course, you possibly can all the time assess the crease itself: A superb line will typically seem, nicely, superb and faint, whereas a wrinkle could also be extra static and deep-set. But even this may be subjective, relying on what you contemplate “superb.”