Abstract: There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a conductivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured conductivity and the frequency of the electrical signal.

Abstract: There is provided a device (100) for use in determining a hydration level of skin (102). The device (100) comprises a light source (104-1, 104-2) configured to emit light (106-1, 106-2) and a first polarizer (108-1, 108-2) arranged to polarize light (106-1, 106-2) emitted from the light source (104-1, 104-2) in a first polarization direction (110-1, 110-2) to illuminate the skin (102) with polarized light (106-1, 106-2). The device (100) comprises a second polarizer (112) arranged to polarize light (114-1, 114-2) from the skin (102) in a second polarization direction (116). The second polarization direction (116) is orientated at an angle in a range from 30 to 60 degrees with respect to the first polarization direction (110-1, 110-2). The device (100) comprises a light detector (118) configured to detect the polarized light (114-1, 114-2) from the skin (102) for use in determining a hydration level of the skin.

Abstract: There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a conductivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured conductivity and the frequency of the electrical signal.

Abstract: System comprising sensor (100) for measuring skin parameter, the sensor comprising (i) plurality of spatially separated light sources (110) to provide light source light (111), (ii)detector (120) configured at a first distance (d1) from each light source, wherein the sensor (100) provides the light source light with optical axes (OL) under an angle of incidence (a) selected from 10-80°, with the skin at second distance (d2) and to detect reflected light source light, wherein the sensor comprises at least three light sources, wherein the light sources provide unpolarized visible light source light (111), wherein the first distance (d1) is selected from 10-80 mm, wherein the detector detects polarized light, the system further comprises an analysis system generating a corresponding skin sensor value in dependence of a sensor signal of the sensor, wherein the system creates an image (1000) of the skin with the detector, wherein the image comprises a first area (1001) wherein a maximum intensity is sensed and a s