What does it mean that my CoolSculpting session was cut short because the machine sensed that my skin got too cold?

Thank you for your question. Coolsculpting often takes a few treatments separated 8-12 weeks apart to get significant improvement. I am not familiar with the skin becoming too cold, that doesn't sound accurate. In regards to the red marks, cold can damage the skin just as heat can. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

If the machine alerted that there was a thermal event, then the machine can not be reapplied for at least 24 hours.  This is to keep from doing any harm to the skin in the treated area.  This could mean there was loss of suction with the applicator or a break in the drape over the applicator.  Sometimes after a treatment you will have redness, swelling and even bruising.  If this is something that persist, then you should return to the practice where you are having CoolSculpting to have the area evaluated.

Thermal event means that the applicator moved out of its position and it had lost its suction. CoolSculpting is very precise and it is impossible that your skin became too cold. The mini CoolSculpting applicator is sensitive to every little neck movement so if it is not placed precisely it will not work.
Good luck.