When administered properly, BOTOX rarely causes any complications. With that said, it is still very important to find someone who has experience in handling this medication. Too much of the product can cause an undesirable outcome. A skilled practitioner will use just enough of the medication to effectively freeze the facial muscles that cause wrinkles while leaving nearby muscles unaffected. BOTOX is one of the most popular cosmetic treatments on the market today. It is safe and effective, and approved by the FDA. BOTOX is also used to treat other medical conditions such as squints, excessive sweating, uncontrollable blinking and migraines.