Unrefined oils are either cold-pressed or expeller-pressed, which means they are minimally processed using mechanical extraction (pressure) and low-temperature controlled conditions to extract the oil from the seed, nut, etc. They can also be referred to as ‘virgin’ or ‘extra virgin’.
In cold-pressing, the temperatures are controlled at 80-90°F (26-32°C), which is actually not a ‘cold’ temperature processing as you would expect, but rather low-heat.
In expeller-pressing, the oil is extracted from the seed or nut using mechanical pressure along with heat (usually from friction created during the pressing), at approximately 120-200°F (49-93°C).
The phytonutrient-rich oil is then fine-filtered using a screen, to remove any significant solids or undesired impurities from the oil. No chemical solvents, no high-heat temperatures, and no further refining to alter the condition (colour, scent) of the oil.
Unrefined oils are the most desired, as the minimal processing ensures a high quality, nutrient-rich, authentic-to-nature oil which is true in its flavour and colour.
Beyond the initial stages of processing above, the oil would undergo various further methods of processing – temperature treatments with heat up to 450°F (232°C) or cold-conditions as low as -30°F (-34°C); solvent treatments for deodorization; and bleaching to fade the colour or further remove scent, for example.
Refined oils have less active compounds when compared to unrefined oils, as the further processing damages or denatures these elements.
At Beauty Oils we are using only Vegan, * Cerified Organic, Raw, Unrefined & Cold Pressed Oils.