There are several types of carrier oils. Here is a list of just a few of them:
One way to quickly put a carrier oil to use is to make a massage oil blend. Use ½ of a fluid ounce of the carrier oil of your choice and add 3-4 drops of the essential oil of your choice.
Remember that less is more. Too many drops of an essential oil can make your blend overwhelming.
Consult with a physician before using carrier and essential oils.