No. If you are shaving that is good enough because the hair that is active will still spurt forth within hours to three days, thus showing the electrologist which hairs are in the anagen phase.
I would just get started and shave a day or two before treatment for this particular situation.
Dee
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Dee Fahey, R.N., C.T.
Licensed by the State Medical Board of Ohio for Nursing license and Cosmetic Therapy/Electrolysis license