The most common side effect from botox injections is bruising. Any time a needle punctures the skin there is a risk of bleeding and bruising. Some more serious complications and side effects of botox treatment are: headache, droopy eyelid or eyebrows, crooked smile, allergic reactions, and eye problems like double vision, blurred vision, decreased eyesight, or dry eyes. However, in clinical studies the incidence of these side effects is very small, and all of these side effects will resolve with time as the effects of the product naturally wear off. We will discuss all of these side effects in our consultation.