Ellipsis Perfume by Derek Lam 10 Crosby, Ellipsis is a warm, exciting fragrance for women launched by derek lam 10 crosby. Sandalwood acts as the main accord of this perfume, giving it a robust quality that is fresh and unique. Known for its calming properties, sandalwood essence is often used for aromatherapy and has been a key ingredient in fragrances for decades.