There is provided a device (100) for use in determining a hydration level of skin (200). The device (100) comprises at least two electrodes (102) configured to provide an electrical signal to the skin (200) and a spacer (104) arranged such that the at least two electrodes (102) provide the electrical signal to the skin (200) at different penetration depths (106, 108). The device (100) also comprises a detector (110) configured to measure a response received from the skin (200) at the different penetration depths (106, 108) for use in determining the hydration level of the skin (200).
