Keracell Line Filling & Erasing Serum, featuring MHCsc Technology is specially formulated to nourish and restore the skin, and target the wrinkles and sagging skin in the jowl area, nasal-labial folds (marionette lines), and around the eye area. Â Keracell Line Filling & Erasing Serum helps to plump and restore the health of the skin and helps rebuild the extracellular matrix to prevent the loss of the volume around the eyes and face, and improve firmness and elasticity.