Lock in moisture and add a shiny finish to dry hair with Cocoa Butter and Biotin Length Retention Shine Glaze Serum. Address breakage, damage, and split ends by keeping the hair (and scalp!) moisturized, fortified and healthy in order to achieve optimum growth potential. Cocoa Butter has hair softening properties for healthy shine and its rich moisture shields hair from dryness and over-processing. This expert blend retains length for beautiful, long, shiny hair!