Is laser hair removal time interval every 3 weeks too short?

Hair
and skin tone vary from person to person, so based on the individual as well as
the part of the body that’s being treated, time between laser hair removal
sessions will vary. General guidelines are to wait four to six weeks between
treatments on the face, and to allow eight to 10 weeks between laser hair
removal on the rest of the body. Because your treatment area involves your arms
and legs, three weeks between sessions is likely too short. For the best
results, always work with certified, experienced laser technicians.

Laser hair removal is one of my favorite procedures.  Different areas of the body require different amounts of time.  For example, the face is generally every 4 weeks, the legs every 8 weeks.  However, if one is very hirsute, there may be an indication to do the procedure more quickly.  Please consult a board certified physician for the best cosmetic results for your laser hair removal.

You should always have treatment with a reputable laser clinic so ask about the experience of the laser technician and the name of the laser used.  Typically, laser hair removal treatments are performed every 6 to 8 weeks apart.  You must not be tanned and must avoid sun exposure afterwards.