I regret wanting full Brazilian laser but only have done 2 treatments so far?

Although the results of laser on each patient is different, there should be some hair left especially if you just don't laser part of the area again.  The hair in the pubic area is generally very dense and it generally takes more than 2 treatments for it to be completely gone.  My suggestion would be to let the doctor know what area you want to have hair remaining so he or she can not laser that area again.  Regards, Dr. DiPasquale

  
Laser hair removal can only have a permanent effect on actively growing hair and not all of the hair is actively growing at the same time.  However, the first treatment will be the most dramatic causing all the hair to fall out, whether actively growing or not.  On average after six treatments most people have about 60% of the hair gone.
If you don't have any more treatments to "the square patch" you should expect to have some thinner lighter hair return.  This may take some time as different hair follicles will enter the growth cycle at different times.
I hope this helps. -Dr. Z