Ylang ylang oil is a pale yellow essential oil with a lily-floral aroma derived from the flowers of the ylang ylang tree (Cananga odorata). Ylang-ylang essential oil prevents hair loss and boosts hair growth. One of the best benefits of ylang-ylang essential oil for hair is its hair growth-boosting and natural conditioning properties. That's because this oil can help regulate the sebum level by stimulating the sebum glands of your scalp.