Significant role to play
Carrier oils play a far more significant role in aromatherapy than many people realise, and in comparison to the essential oils some people feel they are of little importance. To believe this would be a mistake though, ecause they offer a wealth of health-giving benefits of their own. They contain vitamins, minerals and essential fatty acids, and many of them soften and improve the condition of the skin. Some of them are also highly effective in treating irritated, sensitive conditions such as eczema and psoriasis as well as helping to reduce wrinkles and scar tissue. And in case you hadn't already done the mathematics; carrier oils make up 98% of a typical aromatherapy treatment. Think about it. Technically classed as 'fixed' oils because they do not evaporate, carrier oils are also known as base oils and vegetable oils. They are largely derived from nuts and seeds, although there are a few exceptions to this generalisation. For example, coconut oil is extracted by a special process from the white flesh which is known as 'copra', and jojoba oil is extracted from a leathery-leaved shrub and is actually a liquid wax rather than an oil.
Rosehip Vitamin C
Extraction methods the oil obtained from nuts and seeds is usually extracted by one of two different methods. The first process is known as 'cold pressing' and is restricted to relatively small-scale production these days due to the higher cost. The nuts or seeds are placed in a horizontal press with a rotating screw known as an 'expeller' and the oil is literally squeezed out. Despite the processing name, a certain amount of heat is produced during the process due to friction, but this rarely exceeds 70° or 80° c and causes little damage to the oil. The oil is then filtered and sold as a finished product. Large-scale industrial production uses a method called 'hot extraction' and uses a similar process, but tremendous heat is applied during the process to increase the yield of oil, and temperatures used can reach up to 200° c which destroys the important vitamins and fatty acids. The waste product from both methods of extraction, known as 'cake' is often re-processed using solvents to extract even more oil. This oil is re-heated again, refined, deodorised and the colour is bleached out. Finally, artificial colour, preservatives and vitamins are added back. These highly refined, solvent extracted oils usually end up on supermarket shelves for use in cooking and are therefore totally unsuitable to use in aromatherapy. All the vitamins, minerals and fatty acids have been destroyed during the extraction process and they are a 'dead' product. You should always buy cold pressed oils for aromatherapy and your skin will be sure to feel the benefits. Regrettably, grapeseed oil cannot be produced by cold pressing since a realistic yield of oil cannot be produced without applying heat.
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