BOTOX^® Cosmetic is the first only FDA approved treatment to temporarily improve the appearance of three areas. Frown lines, crow’s feet lines, and forehead lines in adults. BOTOX is a neurotoxin that inhibits facial muscle contraction by reducing acetylcholine release in the muscle fiber, thus smoothing out the skin wrinkles. Treatment is usually quick and easy to fit into a busy schedule. Many people say it feels like a skin pinch. The actual injection process takes about 10-15 minutes. You may start to notice results within 24 to 48 hours, with full results in 30 days. Results may last up to four months.