Ylang Ylang essential oil is derived from the star-shaped flowers of the tropical Ylang Ylang tree. This essential oil is used extensively in making perfumes and in aromatherapy, and has been used in religious and wedding ceremonies for centuries. Ylang Ylang is frequently used in luxurious hair and skin products for its rich, sweet aroma and also for its protective properties. Ylang Ylang is also known to promote calmness and lift mood.