Provided is a cleansing device which is configured to be used while being easily joined to a mineral water bottle to erase or adjust makeup by using mineral water conveniently even while going out and erase or adjust the makeup without a skin trouble by using the mineral water even in the case of traveling in an area where water is poor. The cleansing device includes: a first joining member joined to an opening of a mineral water bottle accommodating mineral water and including an applicator which allows mineral water accommodated in the mineral water bottle to be applied to a face of a user; and a second joining member detachably joined to the first joining member to protect the applicator of the first joining member.