Tingling sensation in forehead as Botox wears off - normal?

The tingling you are experiencing may be from the movement in your muscle returning to its prior state before Botox. It's been almost the allotted 3 months of Botox effectiveness, so you may need to have more injected.Thank you for your question.Kate Ross, MD

You could be experiencing this tingling sensation as the nerves start to work again. It's a sensation that I have had described to me by other patients. But for your first treatment to only last 9 weeks, I think what you may need in the future is more units for a longer lasting effect."This
answer has been solicited without seeing this patient and cannot be
held as true medical advice, but only opinion. Seek in-person treatment
with a trained medical professional for appropriate care."