DEAR DOCTOR K: Can you explain how Botox reduces lines and wrinkles?
DEAR READER: "Botox" is short for "botulinum toxin." Botulinum toxin injections were first used for cosmetic purposes in the late 1980s. Since then, this therapy has gained quite a following. In 2012, these injections were the leading nonsurgical cosmetic procedure in the United States among men and women in nearly all age groups.