Safety and side effects are actually a very small part of the use of these products, in practice. I have rarely, if ever, seen a safety or side effect. The more important question that truly applies to all patients with forehead injections is: what can go wrong, or what undesirable effects are possible?For injection in the forehead, it is important to inject in the correct area. I see perhaps two patients per week who have suffered ill effects from imperfect injection technique. 99% of the time, the previous infection was from another provider. That other 1%? Me. You heard it--I also choose to be accountable for imperfect botox/dysport injections. Here's the deal with the forehead: if injected too low, the patient can end up with brow drop or heavy brow. It is especially important to be vigilant in older patients who have less muscle mass in this area. I see or hear about this problem pretty often, in part because my patients might have previously seen someone who is less experienced. Rarely, I encounter this problem with my own patients. The bottom line is that I know how to fix it when it happens, and will offer complimentary treatments if results aren't as expected. I see people as patients, and treat them as any good doctor would. Imperfect treatments are a reality; it is important to see a provider who knows how to avoid this, but also how to treat it if it occurs.