When Botox Begins to Wear Off, How Quickly Does It Dissapate?

I have very extensive  personal experience (nearly twenty years) with the use of Botox for the treatment of wrinkles, furrows and scowl lines. In that time, we've come a very long way from just treating frown (scowl) lines between the eyes. Now,  routine uses include worry lines along the forehead, bunny lines on the sides of the nose, crow's feet on the sides of the eyes, crinkles of the lower lids, lipstick bleeding (smoker's) lines around the mouth, turkey necks and crepey chests.

We've also learned a great deal about how best to use these neuromodulating materials. Gone are the severe restrictions on exercising for several  days after treatment and upon lying down for four hours after treatments. Also gone are the slavish need for the doctor  to use the material within four hours after reconstituting it and the recommendation for the patient to do facial mimicry exercises for six hours after a treatment session.

What's more we have developed ways of significantly prolonging the results of treatment. Ordinarily Botox or Dysport last on average about four months. One way to increase the duration of effect is to combine their use with the injection of filler materials. In some cases the combined treatment has resulted in as much as a year's worth of improvement.

Another method is to repeat the Botox or Dsyport injections, at least initially, with a series of treatments spaced at fixed four month intervals (regardless of whether any return of the wrinkles is seen). Recent evidence suggests that after doing so for a while, results may be prolonged for six or more months. I have found this method useful for reducing both the frequency of patient visits and overall cost to the patient and have actually been recommending this approach for several years. 

The effect of botox gradually wears off over 3-4 months.  There is a gentle transition between minimal movement of the  muscles to complete function.  Results do vary between individuals.
You dont wake up one morning with a wrinkled forehead. :-)

The results of your Botox will disappear gradually in about four months or so. It's doesn't just disappear all of a sudden. Usually, Botox injections can be scheduled every 4 months or so, depending on the area and how you react to the treatment.