Ultrasound gel is essential for cavitation treatments as it ensures effective transmission of ultrasound waves from the device to the skin. It eliminates air pockets that could disrupt wave transmission, enhances contact between the device and skin for even wave penetration, and provides a cooling effect to prevent discomfort.

 Additionally, the gel hydrates the skin and improves conductivity, allowing the ultrasound waves to travel through more effectively, creating microbubbles within fat cells to promote their breakdown and elimination.