Plant essential oils are mainly extracted by distillation. General 100 kg of flowers and plants can extract 2~3 kg of essential oil, so the price of real essential oil will not be too cheap. The market reference price is: common essential oils such as orange and tea tree oil are about 100 yuan /400- 1300 yuan, and precious essential oils such as sandalwood are about 100 yuan /900 yuan. I suggest you go to a regular shopping mall or a professional beauty agency to buy it. If some self-proclaimed imported essential oils are cheaper than domestic products, their authenticity is self-evident.

Step 2 look at the usage

Except for a few varieties such as roses, tea trees and lavender, most pure essential oils can't be directly used on the skin, otherwise it will cause burns and peeling. If the essential oil introduced to you by the merchant says that it can be used directly on the skin, and it is said that it is pure essential oils, then there is a problem. We must distinguish between base oil and essential oil. Some base oils in the name of essential oils have really deceived many people.

Step 3 smell it

Most pure essential oils tastes soft and mellow, because 100% is extracted from plants, so pure essential oils has an indescribable taste of natural plants (although the smell is not necessarily good), and the essential oil prepared with essence has a slightly pungent taste, so it is harmful to use such essential oil for a long time. When I first entered the nose, the taste was not very strong, but it had a aftertaste. At the back of the head, there will be a feeling of wilderness. Everyone feels different about him, and his taste is different.

4. Point fumigation

A. If there are oily residues (different from scales) left after unilateral essential oil is pumped several times, it means that it has been diluted with vegetable oil or mineral oil; If there is any crystal residue, it is probably diluted with ethanol and ether, which is self-evident.

B, take a glass of water and drop a drop of essential oil. The real pure essential oils generally volatilizes quickly, and then there is no residue. If diluted with vegetable oil or mineral oil, the volatilization speed will be much slower, and oil stains will often be left on the water surface.

Step 5 look at the packaging

Essential oils are usually stored in dark sealed small glass bottles, with a special bottle cap resistant to strong acid and alkali to prevent sunlight and oxygen from infiltrating, so that essential oils do not volatilize and deteriorate. In a good preservation environment (room temperature), it can generally be preserved for two years, and the essential oil with good quality can be preserved for 4-5 years. Citrus essential oil can also be stored for 1-2 years. Bottled products with drippers are generally 3%- 10% diluted essential oil, not pure essential oils. The label of pure plant essential oil should indicate the purity.

6. Look at the specific gravity

Generally speaking, the proportion of grass essential oil is the lightest, and it will disperse quickly when dropped into a glass of water, and the water surface will be oily; Resin essential oil is the heaviest molecule. If you drop it into a glass of water, it can completely fall into the bottom of the cup and should not dissolve in water. But both of them will distribute two kinds of essential oil molecules under the water surface. Although they are insoluble, they have not penetrated into the whole glass of water. Citrus, a special flower essential oil, is heavier than water and insoluble in water. Similar to resin essential oil, it will drop directly into the bottom of the water, and you can see crystal clear dark green essential oil beads.

7. Look at this color

For example, the foreign citrus in Germany contains a very precious ingredient "Blue Classic", which is dark blue in color and has a strong medicinal flavor. If what you bought is colorless, you must have been cheated!

8. Look at this texture

The purer the quality of essential oil, the stronger the permeability. Gently rub the tested essential oil on the back of your hand or the inside of your wrist, and then massage with your fingertips several times. Good quality essential oil will be absorbed in an instant and will not leave shiny oil on the skin. You can also observe whether the essential oil contains impurities. For example, the essential oil extracted from the peel by the traditional freeze pressing method will leave a little residue, which will make the product quality worse. Because of the molecular structure, the volatile speed of essential oil is relatively fast, and it will play out within 5- 10 minutes, which shows that it is relatively pure. Volatile slowly, not necessarily pure essential oils.

9. Look at the degree of integration

Pure essential oils is very lipophilic, and when it is mixed in base oil, it will be completely integrated, and the molecules of the two are completely combined. Otherwise, the essential oil contains chemical synthesis or wax, which makes it impossible to completely blend with the base oil.

10, depending on the origin.

Plants that extract essential oils will have different qualities due to different producing areas. Land quality, temperature, humidity, planting level, harvesting time and treatment methods all directly affect the quality of its essential oil. Therefore, we should pay attention to the origin of plants when choosing essential oils. List the origin of some essential oils, such as rose essential oil in Bulgaria.

These are reliable methods to judge essential oils. For your reference only, I wish you a happy online!