Thank you for your question, what you're describing is a relatively common side effect known as brow ptosis or a “heavy shelf,” which can occur when Botox affects the frontalis (forehead) muscle unevenly. This happens when: The upper frontalis is treated, but the lower portion is spared, causing the lower forehead muscles to remain active while the upper relaxes, leading to a shelf-like heaviness. Or the glabella (between the brows) is treated more aggressively than the forehead, reducing upward pull and allowing the brows to descend. Can more Botox fix it? In some cases, yes—a strategic placement of a small amount of Botox above the outer brows can help lift the lateral brow by relaxing the muscles that pull it down (like the orbicularis oculi). However, this must be done very carefully, or it could worsen the issue. Alternatively, should you wait it out? If you're within the first few weeks of injection and the heaviness is not severe, it may be best to wait and monitor. Botox typically begins to wear off at 6–8 weeks, and full function usually returns within 3–4 months. If the heaviness is uncomfortable or affecting your confidence, a follow-up with your injector is recommended. My advice: See a board-certified dermatologist or experienced injector for an in-person evaluation. Discuss a minor touch-up if appropriate. Ensure that future treatments are more balanced to maintain a natural, lifted brow position. This is correctable, and fortunately, temporary. You’re not alone in experiencing this!