After one use, I have left side facial paralysis, sensitivity to light and eye irritation. I look like I have had a stroke. I can smile on only one side of my face. It looks horrible. I do not know how long this will last, it has been less than one month. I cannot go outside without dark sunglasses. It is extremely painful on sunny days. This never happened with Botox. Also, A Board Certified Plastic Surgeon administered the drug. My advice..DON'T USE DYSPORT!!!!