OBAGI Medical ELASTIderm Neck and Décolleté Concentrate 1 fl oz/ 30 mL NIB $198. ELASTIderm® Neck and Décolleté Concentrate a solution for the distinct signs of skin aging on the neck and upper chest like sagging, horizontal lines and uneven skin tone. Firm: support healthy elastin Smooth: Decease the look of fine lines and wrinkles Brighten: improves uneven skin tone The roller bar leverages mechanobiology, a cutting-edge scientific principle that suggests mechanical stimulation may reveal visual improvement to skin elasticity and texture.