Hair Oil Treatment For Dull, Dry & Damaged Hair by Redken Glow Dry. Protective hair treatment smoothes, softens & conditions hair while strengthening Product Benefits Heat-responsive, ultra lightweight hair oil Provides Diamond-like hair shine Reduces blow-dry time Fast, easy style for all hair types Directions for use: Apply on damp hair concentrating on mid-lengths & ends. Blow-dry. Reapply on dry hair as needed for added shine.