I'm Currently on Dialysis, Had Botox in Forehead and Frown Line, for Some Reason It's Not Lasting! What Do You Think is Wrong?

Dialysis will not have any effect on the duration of your Botox.  The more likely reason is that the dosage used is suboptimal to treat your facial muscles.  If you continue to have short duration of effect with your current injector, trying a different physician is likely to give you longer lasting results.  

These individuals had treatment effects that lasted 4 to 6 months.  So dialysis is unlikely the issue.  This means how your Botox is being done and the actual dose you are getting treated with are likely to be more significant factors.