PROBLEM TO BE SOLVED: To provide a skin state measurement care system including a skin care device for taking care of skin in connection with a user client, and the skin care device.SOLUTION: The present invention includes: a smartphone 3 as a user client, to which a skin state measurement device 1 and a skin care device (care esthetic device) 2 can be connected; a data management server 5, connectable to the smartphone via the Internet 4 (network); and a computer system of a partner company such as a cosmetics company as a contractor client 6. The skin care device is controlled based on a method determined by means for determining a method for controlling the skin care device.SELECTED DRAWING: Figure 1