Skin whitening mask, skin whitening device, and skin whitening method using same

A whitening device, comprising:

• a first mask layer;
• a second mask layer provided with a material having a higher flexibility than the first mask layer, wherein the second mask layer is configured to contact a face of a user when the whitening device is worn over the face of the user;
• a flexible thermoelectric module configured to be interposed between the first mask layer and the second mask layer and to be in contact with the second mask layer, wherein the flexible thermoelectric module includes a plurality of thermoelectric elements, wherein the flexible thermoelectric module comprises a first main surface in contact with the second mask layer and a second main surface located on the opposite side of the first main surface;
• and
• a fluid layer positioned on a side of the second main surface of the flexible thermoelectric module to absorb heat generated from the second main surface when the first main surface is cooled, wherein the fluid layer comprises at least one fluid chamber, wherein the at least one fluid chamber is configured to cover at least a portion of the second main surface of the flexible thermoelectric module, wherein the at least one fluid chamber is configured to be supplied with fluid from a fluid tank through at least one fluid line;
• wherein the flexible thermoelectric module and the fluid layer are structurally configured to satisfy all of the following conditions so as to allow the fluid layer to change a shape of a fluid area occupied by the fluid layer between the flexible thermoelectric module and the first mask layer when an external force is applied to the second mask layer:
• a) the flexible thermoelectric module is provided with a flexible material in an interior of the flexible thermoelectric module, and the first main surface and the second main surface each comprise a thin polyimide film,
• b) the flexible thermoelectric module is configured to have a higher flexibility than the first mask layer,
• c) the fluid layer is configured to be interposed between the first mask layer and the flexible thermoelectric module, allowing the fluid layer to occupy at least a portion of an area between the flexible thermoelectric module and the first mask layer,
• d) the at least one fluid chamber is configured to have a higher flexibility than the first mask layer, and
• e) wherein a thickness of the at least one fluid chamber is greater than a thickness of the at least one fluid line.