Will there be permanent scarring after laser hair removal and cellulitis? (Photos)

It is way to early to talk about scarring. This needs a burn specialist to make sure healing is optimized. I would see a derm or Plastic Surgeon for this. Scarring is likely but to what extent is unknown. I'm sorry this has happened to you. Obviously the wrong laser or wrong settings were used. 

First, we are so sorry that you had this experience.  With the proper laser and settings, burning, scarring and cellulitis should never happen.  It is too early to really know if you will have any permanent scarring from this event.  We would advise you to seek a plastic surgeon or burn specialist to develop a strategy to prevent this.