Is There a Right Age to Start Botulinum Toxin?
There is no single correct age; the more practical marker is when repeated expressions begin to leave lines that linger.
People often ask for a number, but skin does not read a birth date. What matters more is the shift from lines that show only during movement to lines that stay visible at rest, since that transition, not a fixed age, is what treatment is usually aimed at.
Line type over age
Dynamic lines appear with expression and smooth out at rest, while static lines remain even when the face is still. A preventive approach in the late twenties or thirties is sometimes discussed, but this is a general idea rather than a rule that applies to everyone.
Skin and expression habits vary widely between individuals, so the timing that suits one person may not suit another. Rather than choosing by age alone, consult a specialist who can read your line pattern before deciding.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.