Essential oils are highly concentrated plant extracts that are used for a variety of purposes, including aromatherapy, massage, and skin care. The four crossword solutions for the term essential oil are ATAR (4 letters), ATTAR (5 letters), OTTO (4 letters), and NEROLI (6 letters). ATAR is an essential oil derived from the resin of the Boswellia tree, which is native to the Middle East and North Africa. ATTAR is a type of essential oil made from flowers, herbs, and spices, and is popular in India and the Middle East. OTTO is an essential oil derived from the flowers of the bitter orange tree, which is native to Asia and the Mediterranean. NEROLI is an essential oil derived from the blossoms of the bitter orange tree, which is also native to Asia and the Mediterranean.