Results from Botox typically appear within 3 to 7 days

https://www.scribd.com/document/1012970028/Botox-101-What-to-Expect-from-Your-First-Botox-Treatment-149323

Results from Botox typically appear within 3 to 7 days, with full effects visible by two weeks and smoothing that can last about 3 to 4 months for most people.