Several factors contribute to the formation of facial lines. Decreased collagen production, cellular changes, genetics, environmental damage, and sun damage may all play a role. Facial lines are also formed by repeated muscle contractions such as frowning, squinting, or raising the eyebrows. These facial expressions cause the skin to furrow and fold, which eventually leads to the formation of wrinkles. DAXXIFY works below the skin’s surface to temporarily reduce the underlying muscle activity responsible for moderate to severe frown lines.