Written by the Sakura Skin team. Medically reviewed by Bethany S. Campbell, JD, RN, Sakura Skin Medical Spa, Fenton & Flint, MI. Published October 25, 2026. Last updated October 25, 2026.
Short answer: Botox and Xeomin rely on an enzyme that needs zinc, and one small 2012 study found a zinc-and-phytase supplement lengthened results by nearly 30% for most participants. But later reviews say the evidence isn’t strong enough to recommend zinc for everyone, and the dose used in that study is above the safe daily upper limit. Talk with your provider before taking high-dose zinc. Dose, technique, and your own muscles matter far more.
If you get anti-wrinkle injections, you want your results to last as long as possible. So when headlines claimed a simple zinc supplement could make Botox last up to 30% longer, a lot of people took notice.
Is there something to it? There may be a connection, but the evidence isn’t strong enough to promise results. Here’s what the science actually shows.
How Does Zinc Affect Botox?
Botox and Xeomin are botulinum toxin products. They temporarily block the signal between a nerve and a muscle, which softens expression lines such as forehead lines, crow’s feet, and “the 11s” between your brows.
The toxin contains an enzyme that needs zinc to work. That’s where the theory comes from: if zinc helps the enzyme do its job, maybe more zinc means longer-lasting results.
The catch is that if your body already has enough zinc, adding more may not make any difference.
What Does the Research Show?
The 2012 Study
The study behind the “30% longer” claim included 77 patients split into three groups:
- Zinc citrate (50 mg) with phytase
- Zinc gluconate (10 mg, a lower dose)
- Placebo
In the zinc citrate and phytase group, 92% of participants saw their treatment last longer, by an average of nearly 30%, and 84% reported a stronger effect. The lower-dose zinc group did not show a comparable benefit.
That sounds impressive, but the study had real limitations:
- It was small
- It mixed cosmetic and neurological treatments
- It was stopped early
What Later Reviews Found
A 2023 systematic review found only two eligible randomized controlled trials, with 123 participants in total, and concluded there was insufficient evidence to recommend zinc supplementation routinely.
A second 2023 review called the results promising but said larger, more rigorous studies are needed.
The research is encouraging, but it is far from settled.
Should You Take Zinc Before Your Next Botox Appointment?
Not necessarily. Here’s what to know about zinc intake:
| Zinc Guideline | Amount per Day |
|---|---|
| Recommended intake, women | 8 mg |
| Recommended intake, men | 11 mg |
| Tolerable upper intake level (all sources) | 40 mg, unless a healthcare professional advises otherwise |
Some of the Botox longevity research used 50 mg, which is above that upper limit. Too much zinc can cause:
- Nausea
- Stomach and digestive discomfort
- Copper deficiency
- Anemia
- Interactions with certain medications
If you’re thinking about taking zinc, talk with your healthcare provider first.
What Actually Determines How Long Botox Lasts?
Botox typically lasts about three to four months, but that varies quite a bit from person to person. (For more, see How Long Do Botox and Xeomin Results Last?) The biggest factors are:
- Treatment dose. Too few units can mean results that wear off sooner. Our treatment-area guide to Botox units explains more.
- Muscle strength and activity. Stronger, more active muscles may break through sooner.
- Injection technique and planning. Placement and an individualized plan matter.
- Your metabolism and response. Everyone responds a little differently.
- Product selection. Different products may suit different patients.
Does Zinc Work With Xeomin Too?
Possibly, but that hasn’t been established by product-specific research.
Xeomin (incobotulinumtoxinA) and Botox (onabotulinumtoxinA) are both type A botulinum toxins, and both rely on zinc-dependent enzymes. But the early zinc-and-phytase study did not establish longer-lasting Xeomin results, so claims that zinc extends Xeomin would be premature. Curious how the two compare? Read Botox vs. Xeomin: What’s the Difference?
The Sakura Skin Perspective
We believe your treatment should be guided by clinical evidence, not social media trends. The zinc research is interesting, but there is no convincing evidence that everyone receiving Botox or Xeomin should take zinc supplements.
What makes the biggest difference is individualized treatment, appropriate dosing, and realistic expectations. If your treatment seems to wear off early, talk with your provider. There’s often a clear reason, and a plan can be adjusted.
Anti-Wrinkle Treatments at Sakura Skin
We offer individualized anti-wrinkle treatment for the forehead, crow’s feet, and the 11s. See pricing and details on our Botox and Xeomin page.
Upper Face Anti-Wrinkle Treatment: $455 flat fee. This includes the clinically appropriate number of units for all three areas.
The Bottom Line
Zinc plays a real role in how botulinum toxin works, and early research is intriguing. But the evidence is limited, the studied dose is higher than the recommended upper limit, and zinc hasn’t been proven to reliably extend Botox or Xeomin. Proper dosing and an individualized plan are still the best way to get results that last.
Questions? Talk to Us.
Sakura Skin has locations at 13389 Pomona Drive in Fenton, MI and 2335 S. Linden Road, Suite B in Flint, MI, serving Fenton, Flint, Linden, Holly, Grand Blanc, Swartz Creek, Davison, and Hartland.
Ready to schedule your anti-wrinkle consultation? Call 810-394-2187 or Text 810-512-2496 — or book online at calendly.com/sakuraskin. We’re in Fenton and Flint, MI.
Clinical References
- Koshy JC, et al. Effect of dietary zinc and phytase supplementation on botulinum toxin treatments. Journal of Drugs in Dermatology. 2012;11(4):507–512. https://pubmed.ncbi.nlm.nih.gov/22453589/
- Trindade Junior H, et al. Effects of zinc supplementation on duration and action of botulinum toxin applied to face muscles: A systematic review of randomized clinical trials. Journal of Trace Elements and Minerals. 2023;5:100080. https://doi.org/10.1016/j.jtemin.2023.100080
- Mallat F, Kaikati J, Kechichian E. Botulinum Toxins and Zinc: From Theory to Practice—A Systematic Review. Clinical Neuropharmacology. 2023. https://pubmed.ncbi.nlm.nih.gov/37335837/
- National Institutes of Health, Office of Dietary Supplements. Zinc: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/
- Women’s Health. Can Zinc Really Make Your Botox Last Longer? Dermatologists Reveal the Truth. July 28, 2026. https://www.womenshealthmag.com/beauty/a73202792/can-zinc-supplements-make-botox-last-longer/
Individual results vary. This article is for educational purposes only and is not individualized medical advice. Zinc supplementation has not been established as a reliable way to prolong botulinum toxin treatment, and you should not start high-dose zinc without consulting a qualified healthcare professional. All injectable procedures carry risks.