Can I do a laser for my whole body in the same session?

Thanks for your question – please consult with a board certified dermatologist or plastic surgeon.  The biggest problems with doing the whole body with laser hair removal is not the laser treatments per se, it’s the use of any topical lidocaine, which cannot be used on the entire body at the same time – most laser hair removal done today does not use much lidocaine because of proper cooling on the machines – but if needed, this should be avoided on the whole body.  Also, there will be an expense to consider – which will add up significantly.  As noted, I would treat the most important areas first, and then move on to others as needed.

I don't think that you will be happy with this type of treatment. It will be very expensive too. In my experience, body hair outside of the pubic, axilla, and leg, responds poorly to LHR because the hair is not coarse enough. I would start on these areas and see if you get good results before to all the areas described. It will also take a lot of time to treat all those areas so you must have 1 hour at least to devote per session.