Yes anything is possible. Like getting attacked by a shark in the ocean, struck by lighting or someone die's undergoing a routine almost no-risk-at-all surgery when put under general anesthesia (it happens everyday somewhere in the world). Bottomline ANY laser procedure  with ANY laser in ANY industry can possibly cause scarring, and this is included as a potential risk on most consent forms you will sign prior to your laser hair removal treatment.

However, the risk of scarring from laser hair removal is very rare (otherwise the FDA would not had approved the LightSheer Diode Laser for laser hair removal) and is a function of many things including: The experience, skill, knowledge and training of the laser hair removal specialist, your particular ability to heal from laser hair removal treatments, the type of laser your using (we recommend FDA approved lasers only) and the amount of melanin pigment in your skin.