Carrier oils are derived from the fatty portion of a plant, usually the seeds, the kernels or the nuts. They are used to dilute essential oils, absolutes, CO and other
2 concentrated aromatics before applying them to the skin.
The carrier oils themselves have different characteristics and therapeutic properties, so they are usually chosen for a formula with the end result in mind. For example, for oily skin you might choose grapeseed oil as your carrier oil because it moisturises but does not leave an oily film on the surface of the skin (which can lead to acne). It also contains anti-inflammatory properties, which soothe acne-inflamed skin. However, grapeseed oil has a relatively short shelf life so it might be better to choose another oil if you want your product to last longer.
Carrier oils with a shelf life of at least a year: Oily skin: Jojoba, hazelnut, macadamia. Normal skin: Apricot kernel, fractionated coconut oil, rice bran. Dry skin: Apricot kernel, avocado, olive, meadowfoam, rice bran.
Other great carrier oils include hemp, sunflower, castor, rosehip, sweet almond and wheatgerm.