dosage equals duration

BOTOX Cosmetic injections are among the most effective non-surgical treatments for improving dynamic facial wrinkles. Dynamic wrinkles are caused by facial muscle contractions that occur when we smile, laugh, or frown. BOTOX Cosmetic is safe and is FDA-approved as a temporary aesthetic treatment for moderate-to-severe frown lines in adults. Since 2002, millions of people have used BOTOX for both aesthetic and medical conditions.  BOTOX results last up to 4 months with recommended dosing of treatment.