How Long Does Botox Last — and What Affects Longevity?

Patients ask one question more than any other: How long will my Botox last? The honest answer is a range, not a fixed date — usually around 3–4 months for facial aesthetic doses, with individual variation. What lengthens or shortens the effect • Muscle strength: Strong frown or masseter muscles may metabolise the effect faster or need a tailored unit map. • Metabolism and activity: Very high training loads or a fast metabolism can nudge the window shorter for some people. • Dose and placement: Under-dosing fades earlier; over-dosing is not a safe way to “make it last longer.” • Consistency: Regular intervals often maintain a softer baseline so lines do not fully re-etch between visits. • Area treated: Forehead, crow’s feet, and masseter can feel different in duration even in the same person. The first two weeks You should not judge longevity on day one. Full effect settles over several days. A review visit — if offered — is for balance and safety, not for chasing permanence. Aftercare that protects your result Avoid rubbing treated areas for the first hours, skip extreme heat the same day if advised, and keep follow-up notes. Skincare and sunscreen support skin quality but do not replace neuromuscular treatment. Planning your calendar If you have a wedding, shoot, or travel season, schedule with the onset window in mind (often best appearance after the first week). Maintenance is usually timed before full return of movement — your clinician will suggest an interval based on how your face responded. Longevity is personal. The best plan matches your muscle pattern and lifestyle, not a generic “every 90 days” rule printed online.