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Botox
Botox or Dysport? How many units would I need for my forehead wrinkles?
Typically you need 2.5-3x as many Dysport units compared to Botox units so the cost is approximately the same. Both products work well and most patients will find they cannot tell the difference between the two. I compare Botox and Dysport to Coke and Pepsi. I recommend my patients to try both and find their own personal preference. I would start conservatively if you are only planning to treat the forehead and not the glabella (area between the eyebrows), as sometimes it can cause the brows to feel heavy due to unopposed paralysis. I recommend simultaneous treatment of both the forehead and glabella for a more balanced result. 10-12 units would be a good place to start for the forehead alone. As always, please see an experienced, board-certified injector.
Clinical Context
Forehead wrinkles form when the frontalis muscle contracts to lift the brows. Botox and Dysport work by blocking the nerve signals that trigger this contraction, temporarily relaxing the muscle. Because frontalis is the only muscle lifting the brow while the corrugator and procerus muscles between the brows pull it down, treating the forehead alone can sometimes make the brow feel heavy. Treating both areas together often gives a more balanced result. Effects typically build over the first one to two weeks after injection.
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