I have suffered migraines since I was 15yrs old, I also suffer with chronic neck pain/tension after a car accident. I recently purchased this product as I'm fed up of taking medication and wanted something more natural. I made up a rollerball with 20 drops of happy head and sweet almond carrier oil and placed it along the back of my neck, up into my hairline, on my temples, across my forehead and down the bridge of my nose, and rested in a dark bedroom. My migraine was gone in 2hrs. I used it again a few days later when I had a tension headache and again, this product worked it's magic. I highly recommend. Thank you eco modern essentials for this amazing product.