There is no such thing as therapeutic grade approved oils of therapeutic grade clinical grade, or perfumery grade. Nor is there such a thing as therapeutic grade A, B, or C. GRAS stands for generally recognized as safe by the FDA and EPA, and this applies only to essential oils used inflavoring food.
1. Lavender oil
2. Lemon oil
3. Vetiver oil
4. Ylang Ylang oil
Kaffir Lime Oil (Citrus hystrix), originating from Indonesia, is extracted through steam distillation. It contains Citronellal, Citronellol, Nerol, and Limonene, giving it a unique fragrance and therapeutic properties.