How Long Do Anti-Wrinkle Injections Last?

Anti-wrinkle injections typically last between 3 and 6 months. Where you fall within that range depends on the area treated, the dose used, your metabolism, and how well you follow aftercare in the days after treatment. Most patients settle into a predictable top-up schedule after two or three rounds.

This article breaks down the expected duration by treatment area, explains the key factors that affect longevity, and covers what you can do to get the most from your results.

Anti-wrinkle injections use a purified form of botulinum toxin to temporarily relax specific facial muscles.

By reducing the repeated muscle contractions that cause expression lines, the overlying skin smooths out. The effect is not permanent — the body gradually metabolises the toxin over months, and muscle activity returns to normal. This is why top-up appointments are needed to maintain results.

Duration varies meaningfully by treatment area, primarily because different muscles have different levels of activity and strength.

Results do not disappear suddenly. The effect fades gradually over several weeks, with muscle movement returning progressively rather than all at once. Most patients notice the early return of movement before the lines themselves return fully.

1. Metabolism

The body breaks down botulinum toxin naturally over time. Patients with a faster metabolic rate tend to process it more quickly, leading to shorter-lasting results. High-intensity exercise, a fast metabolism, and younger age can all contribute to this. It does not mean the treatment is not working — it simply means your body clears the product sooner.

2. Muscle strength and activity

Stronger, more active muscles metabolise anti-wrinkle injections faster. This is why high-movement areas like the forehead typically sit at the lower end of the duration range, while the masseter — treated at higher doses — often lasts longer. Patients who are very expressive, or who habitually clench or grind, may notice shorter durations in the relevant areas.

3. Dose

Higher doses generally produce longer-lasting results, but the appropriate dose is always determined by your anatomy, muscle strength, and aesthetic goals. Undertreating to reduce cost or product use shortens duration without improving the outcome. At Dr Hass Clinic, dosing is always calibrated to achieve both the result and the longevity you are after.

4. Treatment history

Results often last progressively longer with repeat treatment. As the targeted muscles are repeatedly relaxed over months and years, they gradually lose some bulk and habitual tone. Many long-term patients find their results become more consistent and longer-lasting, and some find they need slightly less product over time.

5. Aftercare

What you do in the days immediately after treatment influences how well the product settles and how long results last. Avoiding intense exercise, heat, and touching the treated area for the first 24 to 48 hours is particularly important. For a full breakdown, see our anti-wrinkle injections recovery and aftercare guide.

6. Sun exposure and lifestyle

Chronic UV exposure accelerates skin ageing and may contribute to faster breakdown of results over time. Daily SPF is one of the most effective things you can do to preserve both your skin and the longevity of any aesthetic treatment. Smoking and high alcohol intake also affect skin quality and may reduce how well results last.

Below is an example of anti-wrinkle injections used in the context of a Nefertiti Neck Lift at Dr Hass Clinic.

If this is your first treatment, results will most likely sit towards the shorter end of the 3 to 6 month range. This is normal and expected. The degree of muscle relaxation may also feel less pronounced than it will at subsequent appointments, particularly in areas with strong baseline muscle tone.

With each round of treatment, most patients find results become more consistent, potentially longer-lasting, and easier to maintain. A two-week review appointment after your first treatment allows your practitioner to assess the full effect and make any adjustments before your next session.

• Follow aftercare instructions carefully in the first 24 to 48 hours — avoid heat, exercise, and touching the treated area
• Wear SPF daily to protect skin quality and slow the ageing processes that work against your results
• Stay consistent with appointments — booking before results have completely worn off helps maintain muscle conditioning and may extend duration over time
• Avoid excessive alcohol and smoking, both of which affect skin health and may accelerate how quickly the product is metabolised
• Discuss dosing with your practitioner — if your results are consistently fading early, a small dose adjustment may extend longevity without changing the aesthetic outcome

Most patients book their top-up at around the 3 to 4 month mark, before results have fully worn off. Treating before the muscle has returned completely to its baseline helps maintain a more consistent result and supports the longer-term conditioning effect of repeat treatment.

Over time, you will develop a clear sense of your personal timeline. Many patients keep a simple note of when they were treated and when movement began to return, which makes planning future appointments straightforward.

At Dr Hass Clinic, anti-wrinkle injections are performed by Dr Hasaneen Al Janabi, a GMC-registered doctors with a precise, anatomy-led approach.

Every treatment is personalised to your facial structure, muscle strength, and goals — not applied as a standard protocol. If you would like to understand what results and duration to expect for your specific concerns, a consultation with Dr Hasaneen will give you a clear, honest picture.