When it comes to essential oils, what people hear most is that they are "purely natural substances extracted from plants". A "pure natural", called most people in the use of less guarded. Indeed, essential oils such as extracted from nature "elves", whether it is a bath or massage, or aromatherapy, for the city of white-collar workers who suffer from the heavy pressure of work have a little role, it can not only improve the health of women's skin, but also promote vitality, regulate the balance of mind and body. However, although essential oils are good, they can not be used at will. Essential oils are different from ordinary cosmetics, but like herbs, they have a certain degree of toxicity. Therefore, despite their amazing effects, essential oils must be used carefully and scientifically. As the concentration of essential oils is very high, overuse will result in the skin surface being unable to metabolize, forming burns and darkening the skin. Many cosmetologists have confessed that often encountered such a situation: customers buy back a single formula of essential oils, thought a little more effective, so wash your face with a few more drops, the results of the face out of the red pimples. Urban white-collar Ms. Wu, a week ago, accidentally a bottle of chamomile essential oil spilled on the phone, wipe clean after a few days, the phone keys become very rough, the hinge part of the flip cover was even corroded to break open. Visible, we want to essential oils to the beautiful at the same time, but also to pay attention to its hidden dangers. Good to buy off 1. In the store to buy aromatic essential oils, be sure to ask about the composition, usage and contraindications, the regular essential oil products should be held in dark-colored vials, the bottle mouth is designed to drop mouth shape. Many of the so-called "essential oils" sold on the market, has added mineral oil and flavorings, can only be used to point incense burner smell, only from the plant extracted pure essential oils can be used for beauty care. 2. Be sure to go to the regular shopping malls or specialty chain beauty salons to buy, pay attention to the label of the essential oil with or without labeling the plant's scientific name, origin, purity, registered trademarks, date of production. It is best to buy your own essential oils under the guidance of professionals, be sure to read the instructions in detail, do not mix or blend essential oils without authorization. 3. It is difficult to recognize the authenticity of aromatherapy oils when you first buy them. The grade and level of essential oils vary greatly, and the prices of essential oils extracted from different varieties, different origins and different refining methods are very different. This is like buying tea, divided into many grades, the same variety of tea may have a different price, some tea may even be sky-high, often according to personal taste, consumer values, and feel satisfied after tasting can be purchased. 4. Go to a few stores to comprehensively compare, do not buy some synthetic essential oils cheap, it is not only no beauty and health effects, but also may be harmful to the body. Before purchasing, ask whether the essential oils are single or compound, it is recommended to use compound essential oils, and then consult the instruction manual to understand its safety. The use of essential oils to do skin care, be sure to mix with the plant base oil or cream dilution, so as not to easily allergic to the skin burning, irritation and other uncomfortable symptoms. However, do not use mineral oil (such as baby oil) to dilute essential oils, because the molecular weight of mineral oil is too large, which will prevent the skin from absorbing it and make the therapeutic effect disappear. If you have a history of skin allergies, when using essential oils containing phenol, the dilution ratio should be lowered (i.e., the essential oil component should be reduced, and the base oil or cream should be increased) and the dosage should be noted, and a small portion of the skin should be tested before use. Generally speaking, people with sensitive skin should take a sensitivity test when using essential oils such as lemon, peppermint and tea tree. When using essential oils, do not touch the sensitive mucous membranes around: such as the pubic area, mouth, nostrils, eyes and other parts of the body, if accidentally contacted, may produce burning discomfort, you should immediately use the appropriate amount of dipped in plant-based oils (eg, sweet almond oil, grape kernel oil) of the cotton ball or make-up remover cotton, in the uncomfortable parts of the repeated application of dilution. Individual essential oils (e.g. citrus) can chemically interact with UV rays to produce melanin in the skin, and should be avoided for daytime use on the face or sunbathing on exposed skin. However, not all citrus aromatherapy oils contain photosensitizing properties. Those that can be used during the day include: Lime (steam distilled), Sweet Orange, Red Mandarin, Mandarin, Grapefruit. Avoid daytime use: lime (extracted by pressing), bergamot, bitter orange. Do not use essential oils until 36 hours after immunization. When pregnant, avoid essential oils that tend to cause miscarriage, such as taro, cypress, jasmine and chamomile. For young children, use 1/4 or half of the amount used for adults, do not overdo it. Essential oils should be stored in dark-colored glass bottles, and should be protected from light and high temperatures and kept sealed, and should be placed in a place where children can not reach. The following groups of people should be cautious of using essential oil massage: menstruating women and pregnant women in the third trimester of pregnancy, patients with high blood pressure, patients with tumors, people with a history of epilepsy, skin in the allergic period, and so on.