Rosemary. From the Doterra website: Shelf life testing performed on essential oils has shown that essential oils maintain their efficacy even after 5–10 years or more. Storing essential oils properly also plays a major role in ensuring that essential oils maintain their efficacy and beneficial properties over time. 💜 All oils purchased by me from Doterra 🧡 All oils stored at room temperature 🩷 Destashing my a duplicates 🚘 Quick shipment ❌ Smoke free Pet free home 💲Reasonable offers considered 🎬 All Doterra sales are final. Refunds, exchanges, and returns not accepted due to hygienic and sanitary nature of this product. Thanks for stopping by!!