Oil phase refers to oil or oil-soluble substances, including triacylglycerols, fatty alcohols, waxes, wax esters, fatty acids, and mixtures of the foregoing (such as lanolin).
The main functions are barrier, moisturizing, cleaning, solvent, emulsification and curing.

According to the source, it can be divided into:
Animal and vegetable oils
The main component of animal origin is fatty acid triglyceride (triacylglycerol)
Plant-derived mainly fatty acids, such as lauric acid (strongly irritating, generally not used alone, but used in the production of soap base), myristic acid, palmitic acid, stearyl ester, oleic acid (18-carbon one) Oleic acid), linoleic acid (octadecadienoic acid), linoleic acid (octadecatrienoic acid).
The longer the carbon chain of a fatty acid, the harder it will be, as will fatty alcohols.
Since the ethylenic bond is not saturated with a chemical bond, the oil containing an ethylenic bond is called an unsaturated lipid and is easily oxidized, so it also has oxidation resistance.
Animal and vegetable fats and oils are usually not a single ingredient, but a mixture of various lipids. E.g:
Coconut oil: composed of lauric acid (50%), myristic acid (32%), unsaturated acid (8%)
Olive oil: octadecanoic acid (82.5%), containing vitamins A, B, E
Camellia seed oil: high vitamin content, special odor, high viscosity and greasy
Peony seed oil: very expensive (large cooking smoke), the performance of cosmetics may not be good enough, the active content may be relatively high, the smell and greasy feeling are not ideal
Palm oil: hexadecanoic acid (palmitic acid, 50%), octadecanoic acid (oleic acid, 40%), easy to saponify, used in the manufacture of soaps and surfactants
Almond oil (actually almond oil): mainly octadecanoic acid (oleic acid, 70%; linoleic acid 17%), can be used as a substitute for olive oil
Evening Primrose Oil: mainly octadecanoic acid (oleic acid, 70%)
Sea buckthorn oil: high vitamin E and carotenoid content
Wheat and corn germ oil: high in vitamin E, can be used as a nutrient
Mink oil: oleic acid content is 0. It is very good for anti-freezing and crack resistance in winter, but animal oil has some odor and needs refining to be more suitable.
Jojoba oil: also known as jojoba oil, mainly composed of long carbon chain unsaturated fatty acids (eicosa monoenoic acid, docosaic acid, eicosyl alcohol, docosahexanol), Joba oil is a high-quality oil that is safe and low-irritating to all kinds of skin.