A set of components for being assembled as an applicator for use as a package containing a substance that a user can apply to a target region, said set of components comprising: a platform having an outer side and having an inner side defining a substance support surface for supporting a substance to be applied to a target region by a user; and a lid that can be selectively located relative to said platform at a closed position covering a substance on said platform, and a predetermined open position in which said lid is attached to said platform in a way that would expose a substance on said platform, at least a portion of said lid having a configuration for being grasped and used as a handle by a user when said lid is attached in said predetermined open position to said platform so the user can effect movement of said platform to apply the substance by contacting a target region with a portion of the exposed substance; and wherein one of said lid and said platform defines an engaging member, and the other of said lid and said platform defines a retention abutment surface, and a retention projection that is adjacent, but spaced from, said retention abutment surface to define a recess between said retention abutment surface and said retention projection; and one of said lid and said platform includes an axle (94, 96) defining a pivot axis, and the other of said lid and said platform includes a receiving member (182, 184) for receiving said axle (94, 96) in a snap-fit engagement to accommodate relative rotation between said lid and said platform about said pivot axis to move said engaging member against and past said retention projection wherein such movement is accommodated by temporary elastic deformation of at least a portion of at least one of said lid and said platform so as to locate and releasably retain said engaging member in said recess between said retention abutment surface and said retention projection when said lid is in said open position, wherein said axle (94, 96) is defined by said platform; said axle receiving member (182, 184) is defined by said lid; said engaging member is defined by said platform; said retention abutment surface is defined by said lid; and said retention projection is an arcuate rib defined on said lid, wherein a rearwardly facing end of the receiving member defines the retention projection. a platform having an outer side and having an inner side defining a substance support surface for supporting a substance to be applied to a target region by a user; and a lid that can be selectively located relative to said platform at a closed position covering a substance on said platform, and a predetermined open position in which said lid is attached to said platform in a way that would expose a substance on said platform, at least a portion of said lid having a configuration for being grasped and used as a handle by a user when said lid is attached in said predetermined open position to said platform so the user can effect movement of said platform to apply the substance by contacting a target region with a portion of the exposed substance; and wherein one of said lid and said platform defines an engaging member, and the other of said lid and said platform defines a retention abutment surface, and a retention projection that is adjacent, but spaced from, said retention abutment surface to define a recess between said retention abutment surface and said retention projection; and one of said lid and said platform includes an axle (94, 96) defining a pivot axis, and the other of said lid and said platform includes a receiving member (182, 184) for receiving said axle (94, 96) in a snap-fit engagement to accommodate relative rotation between said lid and said platform about said pivot axis to move said engaging member against and past said retention projection wherein such movement is accommodated by temporary elastic deformation of at least a portion of at least one of said lid and said platform so as to locate and releasably retain said engaging member in said recess between said retention abutment surface and said retention projection when said lid is in said open position, wherein said axle (94, 96) is defined by said platform; said axle receiving member (182, 184) is defined by said lid; said engaging member is defined by said platform; said retention abutment surface is defined by said lid; and said retention projection is an arcuate rib defined on said lid, wherein a rearwardly facing end of the receiving member defines the retention projection.