US Patent 10076646 Rolling applicator for treating skin conditions

An applicator includes a roller, a treatment composition component, a cutaneous measurement component, and a controller. The roller contacts a portion of skin at a contact location and subsequently a target location. The treatment composition component selectively deposits a composition on a roller surface at a deposition location that is on the roller surface a circumferential distance away from the contact location. The cutaneous measurement component generates one or more parameters associated with the target location on the portion of skin. The target location is a target distance from the contact location that is equal to or greater than the circumferential distance. The controller controls the treatment composition component to selectively deposit the treatment composition on the roller surface in response to the one or more parameters associated with the target location on the portion of skin generated by the cutaneous measurement component.