The effects of Botox usually last three to four months, though longevity varies by area treated, dosage, metabolism

https://fernandofwyn482.wpsuo.com/everything-to-know-about-botox-injections-for-fine-lines

The effects of Botox usually last three to four months, though longevity varies by area treated, dosage, metabolism, and lifestyle factors; maintenance sessions help sustain consistent results.