I have had this terrible skin disorder since a child and have gone through many different meds and home remedies. If your eczema is at the oozing stage soak in oatmeal baths and then follow up with neutrogena sesame seed oil and pat dry. If you are in the scaling stage try rubbing crisco on your skin and wrap plastic wrap around areas and sleep with this on. Try wearing white cotton gloves to bed for you scratch and irritate the areas in your sleep. Use cool water to bathe for hot water irritates these areas. Use a good moisturizing lotion like eucerin and also use cortisone when itching. One thing that works well is tanning regularly but don't overdue it in one session. Make sure you know your allergies and try as hard as you can to stay away from those food items or airborne items that you are allergic too. I use aveeno bath products too and stay away from the perfumed items.
If you’re going to be purchasing a pure tamanu oil then you should optimally look for an oil supplier with organic certification , which is a guarantee of a higher quality, genuine oil. As with any botanical product there can be variations in quality from crop to crop and company to company depending on how carefully they’ve sourced and handled their oil. Organic certification ensures you’re getting an authentic, undiluted, pure and potent oil due to the paper trail tracking the botanical back to its source.