If a hair has not released properly, then quite often I will do a pulse in the empty follicle yes. Not having the hair itself in the way, the energy has a chance to access the vital areas of the follicle without interference. It's called the "pre-epilation re-entry technique" or "PERT" ( actually not exactly, since we do treat the hair beforehand, it's just in my judgement that pretreatment wasnt successful, or I wouldnt do it) . If you are getting smooth extractions, then it isnt really necessary to do this however. Sounds like you are doing just fine !