When can Botox be repeated safely?

Anyone who has had Botox soon starts wondering when it is fine to book again. If you are in Mamaroneck, Larchmont or elsewhere in Westchester, one dermatology source gives a short, practical answer.
What the American Academy of Dermatology says
The American Academy of Dermatology states: "You can have another treatment when the excessive sweating or lines and wrinkles return."
That ties the next treatment to what you can see and feel, not to a date on the calendar. That sentence gives no number of weeks.
Further reading on botulinum toxin
The American Society of Plastic Surgeons has a page on botulinum toxin. MedlinePlus has a drug information page on daxibotulinumtoxinA-lanm, one botulinum toxin product.
Questions for your injector
Ask which product you had and when you had it. Ask the clinic what they want to see before a repeat visit.
What to leave alone
Do not book a repeat visit the moment you feel unsure, and do not decide the date on your own from a forum post. If something after treatment looks or feels wrong, call the clinic that treated you.
The follow-up
People often ask next how one botulinum toxin product differs from another. That is worth raising at your next appointment.