Cosmetic Injections for Wrinkles: What You Need to Know
The injection is a neurotoxin that inhibits muscle movement. It was first approved by the FDA for cosmetic use in 2002. It can reduce the appearance of dynamic lines, which are wrinkles that are formed by expressing emotion and resolve when the muscle relaxes. It can also soften the appearance of static lines, which are wrinkles that do not resolve when the muscle is relaxed. Injections are most effective on dynamic lines and can help reduce static lines if used regularly.