⑵ Look at the sediment. When you get an essential oil, look at the bottom of the next bottle for sediment! Essential oils are extracted from plants by cold pressing (of course, not all of them are extracted in this way, I take this as an example). If a good essential oil rarely exists, there will be extraction residue, unlike red wine, which will precipitate over time, so it is worth remembering!
(3) Look at the bubble, that is, the bubble generated after pure essential oils shakes will soon disappear; Generally, it will not disappear within 1-2 minutes. Then admit it. You've been cheated.
(4) look at the color. Many claims on the Internet say that pure essential oils is transparent. Actually, this statement is not comprehensive enough. There are so many kinds of plants in the world of essential oil, each of which is natural and beautiful. How can you obliterate their beauty? Give 1 example!
For example, chamomile, because there is a very precious component "azurol hydrocarbon" in chamomile, it has different quality and smell according to different places of origin. Roman yam is fragrant and dark green. The other is Gan Yang in Germany, also known as Gan Lan in Germany, because its color is dark blue, and it has a strong medicinal taste.
The following is a list of some commonly used essential oils: jasmine essential oil (reddish brown or rust red), rose essential oil (yellow or reddish brown), myrrh essential oil (crimson or reddish brown), marjoram essential oil (dark yellow to brown), sweet orange essential oil (light yellow or golden yellow), citronella essential oil (yellow to dark yellow), bergamot essential oil (light yellow or emerald green) and lemon essential oil (yellow-green).
5. Look at the packaging: Essential oils are generally stored in dark sealed small glass bottles with special strong acid and alkali resistant caps 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. Dark blue and dark green glass bottles are more expensive, because the storage life of essential oils is longer than that of dark brown and amber. Citrus essential oil can also be preserved for 65,438+0-2 years, and the products packed in bottles with drippers are generally diluted essential oil with 3%-65,438+00%, not pure essential oils. The label of pure plant essential oil should indicate the purity, and provide complete information such as shelf life and usage.
[6] Look at the price: Plant essential oil is mainly distilled. Generally, 65,438+000 kilograms of flowers and plants can extract 2-3 kilograms of essential oil, so the price of real essential oil will not be too cheap. The market reference price is: If the price of some self-proclaimed imported essential oils is higher than 20-50 yuan, its authenticity is self-evident.