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How much Botox is needed for forehead? After how long should I go for correction/touch up?
It takes about 2 weeks for Botox to have maximum effect so generally it's advised to wait 2 weeks before deciding whether you need a touch up or not. 20+ units in the forehead is an average treatment dose if it includes the glabella (area between the eyebrows).
Clinical Context
Forehead dosing isn't one-size-fits-all, so your injector sets an initial amount based on your muscle strength and brow shape, then reassesses. Plan to wait roughly two weeks before judging results, since that's how long it takes for the full effect to show. If lines are undertreated or movement returns unevenly, a touch-up can be added at that visit. After that, results typically last a few months, and your next full session's dosing may be adjusted based on how you responded this time.







