PerfumersWorld: Grapeseed oil has an oily bland odour it is used for massage oil bases. occasionally used as a diluent for natural perfumery, but please note you should include an antioxidant such as rosemary extract to slow down rancidity.not really recommended as a solvent in perfumery compounds due to poor solubility of resins, citrus oils (terpenes), powders and crystals plus will tend to produce rancid notes.