Botox is the first and only treatment FDA-approved to temporarily make moderate to severe frown lines, crow's feet and forehead lines look better in adults. Treatment requires minimal downtime. You can return to your daily routine immediately after you leave your specialist's office. You may begin to notice results within 24 to 48 hours for moderate to severe frown lines. Full results in 30 days. It delivers predictable, subtle results, so you look like you, only with less noticeable facial lines