Hello Cazzmoi,One of the most common uses for botulinum toxin is for the cosmetic treatment of vertical frown lines, forehead lines and crow’s feet. Botox injections are also used to treat medical conditions such as twitching or spasm of the eyelid, muscle spasms in the face and body, incontinence, excessive sweating, and migraines. Botox is injected into muscles where it blocks nerve impulses to those tissues. The muscle activity that causes the frown lines is reduced, and you’re left with a smoother look. Without a contracting muscle beneath it, the skin is not able to wrinkle. You can expect the results to last 3 – 6 months. There is no age limit for getting treated with Botox. If you have animation lines that cause wrinkles with movement of certain facial expressions Botox can and will help relax those muscles. More than age, other factors that should be considered, if you are a good candidate for Botox: allergic reactions to Botox itself, having a skin infection or other condition in the injection area, having a nerve or muscle disorder, having breathing problems, such as asthma, having difficulty swallowing, having bleeding issues, having drooping eyelids, if you’re taking or have recently taken certain medications.