A handheld device for applying a composition to a skin of a face of user, comprising: an end effector comprising a base portion and a protruding portion extending distally from the base portion , the protruding portion having a distal opening ; a detector arrangement configured to obtain image data corresponding to an image of an area of the skin through the distal opening of the end effector ; an applicator arrangement configured to apply the composition to a location within the area of the skin; and a processing arrangement configured to receive the image data from the detector arrangement , and analyze the image data to determine whether a frexel within the area of skin corresponds to a skin artifact; characterised in that the protruding portion of the end effector further comprises a plurality of grating bars extending across the distal opening and the image data corresponds to an image of the area of skin overlaid with the plurality of grating bars , and the processing arrangement is further configured to: analyze the image data to determine whether the applicator arrangement is aimed to safely dispense the composition to the area of skin, wherein the processing arrangement analyzes the image data and determines the applicator arrangement to be aimed to safely dispense the composition to the area of skin when the image data corresponds to a region on the face of the user located at least a predetermined distance away from at least one of eyes, nostrils and mouth of the face of the user, direct the applicator arrangement to apply the composition to the frexel when the processing arrangement determines the applicator arrangement is aimed to safely dispense the composition to the area of skin and the skin artifact is detected from the frexel; and direct the applicator arrangement to withhold from application of the composition to the skin when the applicator arrangement is not safely aimed to dispense the composition to the area of skin. an end effector comprising a base portion and a protruding portion extending distally from the base portion , the protruding portion having a distal opening ; a detector arrangement configured to obtain image data corresponding to an image of an area of the skin through the distal opening of the end effector ; an applicator arrangement configured to apply the composition to a location within the area of the skin; and a processing arrangement configured to receive the image data from the detector arrangement , and analyze the image data to determine whether a frexel within the area of skin corresponds to a skin artifact; receive the image data from the detector arrangement , and analyze the image data to determine whether a frexel within the area of skin corresponds to a skin artifact; analyze the image data to determine whether the applicator arrangement is aimed to safely dispense the composition to the area of skin, wherein the processing arrangement analyzes the image data and determines the applicator arrangement to be aimed to safely dispense the composition to the area of skin when the image data corresponds to a region on the face of the user located at least a predetermined distance away from at least one of eyes, nostrils and mouth of the face of the user, direct the applicator arrangement to apply the composition to the frexel when the processing arrangement determines the applicator arrangement is aimed to safely dispense the composition to the area of skin and the skin artifact is detected from the frexel; and direct the applicator arrangement to withhold from application of the composition to the skin when the applicator arrangement is not safely aimed to dispense the composition to the area of skin. <EOS>