The effects of Botox generally last 3 to 4 months, though individual longevity can vary based on metabolism, dosage

https://www.animenewsnetwork.com/bbs/phpBB2/profile.php?mode=viewprofile&u=1141089

The effects of Botox generally last 3 to 4 months, though individual longevity can vary based on metabolism, dosage, and treatment area.