TABLE 3.

Summary table of advantages/disadvantages of each device.

	VISIA‐CR®	Spectrophotometer	SpectraFace®
Ease of use and deployment	++	+	–/+
	Standard tool of colorimetric visualization and measurement	Standard tool of spectral color measurement but rather adapted to in vitro measurement	Nonstandard, innovative tool of spectral color measurement
Color measurement technology	–/+	++	++
	RGB color measurement within the illuminant of the VISIA, not compliant with D65 color measures	Spectral reflectance measurement allowing standardized color measure, compliant with D65 color measures	Spectral reflectance measurement allowing standardized color measure, compliant with D65 color measures
Measurement type	++	–/+	+
	Imaging: Spatial information available	Spot measurement	Imaging: Spatial information available
	(resolution: 34 μm)	(diameter of the spot: 5 mm)	(resolution: 110 μm)
Region of interest	++	–/+	++
	Possibility to define specific region of interest with different size and locations	Spot measurement	Possibility to define specific region of interest with different size and locations
Repeatability	++	++	++
	Good repeatability	Good repeatability	Good repeatability
Discriminability	++	–/+	++
	Significant difference between superior and inferior lips in L*, a*, C*	Significant difference between superior and inferior lips in a*	Significant difference between superior and inferior lips in L*, a*, C*
Capture time	++	–	+
	Immediate	10 s	Approximately 3 s
Simulation of illuminants	–/+	+	++
	Only the illuminant of the system	Conversion of color data under other illuminants, but no associated image	Creation of images under other illuminants