Eleven oils, and the first three tell you what it smells like: peppermint, eucalyptus globulus and rosemary, cooled further by spearmint and softened by lavender, basil, ravensara, cinnamon leaf, Roman chamomile and ginger root extract. Plant Therapy calls the aroma cooling, minty and refreshingly herbal, and it lands squarely there.

It is pre diluted to 5 percent in fractionated coconut oil, so it is ready to use straight from the bottle with no carrier and no mixing. The maker's direction is to apply it to the back of the neck and the temples. Ten millilitres in a green twist top glass roll-on that fits a pocket or a desk drawer. Shelf life two to three years. Plant Therapy publishes no KidSafe designation for this blend.

Another ready to use roll-on: Organic Germ Fighter, $11.99