Botox and Hylenex in the same day? Will Hylenex effect the Botox? (Photos)

There is not any science to support having or not having hylanex and Botox in the same day.  However, theoretically, the Hylanex could cause diffusion of the Botox if the injections area is not separated by a reasonable distance.  I would suggest not combining.  There isn't really a downside, except lost time, to separating the treatments, and there could be a problem.  I would suggest playing it safe and separating the treatments.   

You should space the treatments apart by a few days at least just to minimize the chance that hylenex will not cause further dissolution of product and potentially compound your Botox results. I think Hylenex first, then Botox. Not the same day. 

Hylenex will dissolve the filler but has no effect on the mechanism of action of the Botox. In theory it may cause Botox to dilute or migrate if it is injected in the same area.