Botox® is a neurotoxin produced by the bacteria Clostridium botulinum. This material blocks the signals that normally tell you muscles to contract. When these signals are blocked, the muscles will not contract and thus will not reveal underlying wrinkles. When you opt to have Botox®, Dr. Esteban Espinosa will choose specific muscles to inject with a thin needle, and he will base his procedure on your specific skin type, skin thickness, and the degree of wrinkling on your face. Typically, Dr. Esteban Espinosa will perform 2-3 injections on crow’s feet wrinkles, whereas brow furrows between your eyes could take five or more.