Alexandrite laser hair removal on upper lip, chin and neck.

The hair usually falls out or sheds about 3-4 weeks after treatment.  Too low of a laser power can stimulate hair but this typically takes longer than 4 days.  Keep watching and if there are questions speak with your laser hair provider

It is too early to see results of laser treatment after 4 days. Laser hair removal is a series of treatments. I advise you to be patient and continue your treatments. Best of Luck!

It is way too early to look at results from LHR after one session. This should be thought of in series. No changes are seen in density for at least 3 sessions. Just be patient and continue with the treatments. The Alex laser is a good one.

The areas treated would have been shaved before the Alexandrite laser treatment on the lip, chin and neck, I presume. It is usually not possible for the hair to grow back within 4 days of laser treatment. Only thing I can think of is the dead hair pushing out, that is looking like new hair growth. Sometimes they appear as black stubbles. Usually the dead hair pushing out takes longer than 4 days, however. I would wait for 3-4 weeks more and see what happens. One way to know if the "growing" hair is dead is to grab a hold of one of them and pull off; if the hair comes out easily and PAINLESSLY it is the dead hair.