A compression collar apparatus is disposed upon an article providing an axial manual grasping stop upon the article, the apparatus includes a first arcuate element having first proximal and distal portions, the first distal portion including an engagement segment. The apparatus includes a scanning densitometer for measuring a reflected light from a monitor substrate. The present invention may also include a motor which may provide all or a combination of rotation, oscillation, or vibration movement of the mascara applicator, and buttons or other means for actuating the motor, controlling the rotational direction of the motor, and the speed of the rotation, oscillation, or vibration. The laminations are thereafter repositioned to form the stack into a second shape. The reflection portion, the photo-current generating portion, and the light emitting portion are made of group III-V compound semiconductors layered on a semiconductor substrate.