Facial harmonization
How long do botulinum toxin effects last?
Effects are temporary and vary between people. Understand follow-up and why there is no identical timeline for everyone.
A reference, not a guarantee
For expression lines, the AAD describes a typical duration of approximately three to four months, sometimes longer. This helps frame the discussion but cannot guarantee your duration or establish that every product behaves identically.
The effect gradually wears off
The American Society of Plastic Surgeons explains that muscle activity gradually returns as effects wear off and lines may reappear. Improvement does not stop ageing: skin continues to change and may need other forms of care.
Follow-up provides context
Follow-up compares your progress with the agreed goal. Discuss returning movements and any concerns rather than judging everything solely against other people’s photographs or a timeline advertised on social media.
When to consider another session
Repeat treatment requires a clinical decision rather than an automatic date for everyone. Ask when reassessment is appropriate and what alternatives exist if results differ from expectations. Do not seek extra injections without an indication.