Botox injections generally carry a low risk of complications, but temporary and mild side effects may occur. These can include slight redness, swelling, pinpoint bruising, or mild discomfort at the injection sites. Some patients may experience temporary eyebrow asymmetry, mild brow heaviness, or subtle difficulty lifting the brows due to unintended diffusion into adjacent muscles.
Less common reactions include headache, flu-like symptoms, or dry eyes. In rare cases, unintended spread of the toxin may cause temporary eyelid ptosis, which usually resolves spontaneously within several weeks.
Overall, Botox is considered a safe and minimally invasive procedure when performed by trained specialists, and most side effects, if they occur, are short-lived and manageable.