A device for applying a cosmetic product may include a receptacle configured to be closed so as to place the receptacle in at least a substantially sealed condition. The receptacle may include a reservoir configured to contain the cosmetic product, and an applicator for applying the cosmetic product. The applicator may be configured to be contained in the receptacle, and the device may be configured so as to permit loading of the applicator with cosmetic product from the reservoir, wherein the applicator may include a porous structure. The device may be configured such that the receptacle is configured to be unsealed from the at least substantially sealed condition so as to permit the applicator to be used for application of the cosmetic product, and to be returned to the at least substantially sealed condition with the applicator contained in the receptacle. The porous structure may include at least one biocidal agent.