Fuente: WIPO "essential oil or extracts" Applicator devices for applying topical oils to an individual are disclosed herein. The applicator devices overcome the deficiencies in the prior art by allowing topical oils, especially essential oils, to be applied using a roller-ball applicator. Exemplary applicators may include a topical oil container, and a roller-ball applicator coupled to the container. The roller-ball applicator may include, a roller-ball housing, wherein the roller-ball housing includes a well configured to hold topical oil for application to an individual regardless of the orientation of the roller-ball applicator, and a roller-ball within the housing, the roller-ball being freely rotatable within the housing. The applicator device may also include a cap configured to be removably attached to the container and to seal topical oil within the topical oil container by exerting pressure on the roller-ball when the cap is securely attached to the container.