I have been using Botox since 1991 for aesthetic purposes, and in all that time I do not recall encountering a person new to Botox who did not at least in part respond to the first treatment session. Occasionally a second session a month later is needed to further enhance or tweak the result. On the other hand, I have found on a few occasions in the past 26 years that rarely previously treated patients did seem to develop some level of resistance to the product, which necessitated the use of increased concentrations or amounts of the Botox or a switch to Dysport or Xeomin. Unless I am mistaken, you sound like you are were a first time Botox patient who failed two sessions and then failed a first session with Dysport. If this is so, then I would be suspect that the fault lies with the injector treating you and not you. Perhaps he/she is not injecting properly, or over-diluting the material to save money. What I would not advise right now is any more of the current treatments, as too many treatments spaced too closely together do pose at least the theoretical risk of inducing antibodies to the injectable products, which may then render them ineffective going forward. Whatever the reasons for the failures in your case, I would strongly urge that you seek consultation with a board certified aesthetic physician with experience and expertise in injecting all the current neuromodulators. Make sure to ask to see his/her personal collection of before and after photos before proceeding.