NOW Foods Orange Oil is a 100% pure cold-pressed essential oil expressed from the peel of Citrus sinensis — one of the most cheerful, accessible, and universally appealing essential oils in aromatherapy. Sweet orange oil is rich in d-limonene, a naturally occurring terpene with antioxidant properties and a bright, sweet citrus aroma that is both uplifting and calming simultaneously — making it ideal for stress relief and mood enhancement. Orange oil is one of the most popular diffuser oils and blends beautifully with almost any other essential oil, particularly spices, florals, and other citrus. NOW Foods' Orange Oil is cold-pressed to preserve its full natural aroma complexity and GC/MS tested to verify d-limonene content and purity. Cold-pressed citrus oils may be photosensitizing — avoid direct sun exposure after topical use. Not for internal use.