Botox is a prescription medicine that is injected into muscles and used to temporarily improve the look of both moderate to severe crow’s feet lines and frown lines between the eyebrows. It targets the underlying cause of frown lines and crow’s feet—the repeated muscle contractions from frowning and squinting over the years. It temporarily reduces this muscle activity so you’ll begin to notice a smoothing of these lines. Botox typically lasts 2-4 months. Results may vary.