The Concentrates which have 5 times more essential oils than the Perfumes come in a great rollerball format making the easy to carry in your purse and to travel with. 

The Concentrates are to be used locally on specific areas for targeted problems occasionally or for a short treatment of maximum 15 days. Each Concentrate is accompanied with a chart that shows you the specific areas/meridians where each color should be applied. 

You can also use the Concentrates as a perfume. While they aren't as quick to act as the Perfumes, they are more powerful on deep-rooted and/or old issues.