"Our exclusive dual-viscosity formula allows SCAN to be applied as a gel and scan as a fluid. For medical ultrasound procedures when a less viscous gel is desired. Features: - Acoustically correct, provides superior transmission of ultrasound waves - Completely aqueous, will not stain clothing, damage equipment or irritate skin - Acoustically correct for the broad range of frequencies used - Used and recommended by leading manufacturers of ultrasound equipment worldwide - Hypoallergenic, bacteriostatic - No formaldehyde .