Citrus oils are often referred to as ‘Sunshine Oils’. Descriptions of the emotional pattern of citrus oils will mention creating feelings of happiness. This collection includes 16 oils. Some of them-orange, lemon, and grapefruit-are obvious. Others-petitgrain and neroli-might surprise you. Petitgrain oil is derived from the bark of a citrus tree so, technically, it is a wood oil rather than a citrus. The emotional picture, however, places it firmly in this sunshine citrus category.