Here's a

handy tip for mixing oil based products. Keep your old SOE bottles because the roll on is brilliant for getting

accurate and consistent doses. A mix I am trying at the moment is 20 drops PI/W and 10 drops A7. This makes 1.5 ml

and I add an equal amount of massage oil to make a total of 3 ml. This is enough to experiment but not wasteful if

it doesn't work. The massage oil is scented YlangYlang and lavender and covers very well. The resulting total

concentration is only slightly less than SOE and the doses can be a similar number of inches. Shake well each time

although it seems to stay mixed with no separation..