To provide a hair dye set product which can easily improve the stability of its product line, and a skin check board which can easily reduce the cost by efficient use of board component.

Regarding to a skin cheek board 13 which is packed with bottle containers 10, 11 which keep hair dye liquid and an applicator 12 which is attached to the bottle container 11 in a box, the skin check board 13 is formed from a piece of board component, and comprises a testing part 17 which has a receptor part 16 to make a test liquid of hair dye liquid and an applicator locking part 19 which can be removed from the testing part 17 through a cutoff part 18. The applicator locking part 19 comprises an applicator locking piece 21 formed with cutout 20 made on the board component and an instruction part 22 which is printed on the place uncovered with the applicator 12 settled in the applicator locking piece 21 and shows instruction to attach the applicator.