Frown lines, also known as glabellar lines, are wrinkles or creases that appear between the eyebrows when a person expresses an emotion such as anger, sadness, or surprise. The frown lines form due to repetitive facial gestures and aging, though genetics can play a role in how quickly they develop. While some people may start noticing frown lines as early as their 20s, most people start to see them in their 30s and 40s.

For individuals with moderate to severe frown lines, Dysport injections may be beneficial in improving the appearance of these fine lines by temporarily reducing muscle activity beneath the surface of the skin. As a result, fewer wrinkles appear on the face while still allowing natural expressions through the minimal movement of surrounding muscles.