Lifelines Rub & Sniff™ Scented Colored Pencils - 10-pack (Classic Palette). Color outside the lines with Lifelines Rub & Sniff™ Scented Pencils featuring our favorite Lifelines Essential Oil Blends. Ten delightful scents ranging from pine & patchouli to grapefruit & gardenia create an extraordinary aroma experience, while beautiful, nature-inspired imagery on every pencil brings you back to the here and now. Aroma is activated by rubbing each pencil, using patent-pending Rub & Sniff™ technology.