Menthol crystals are formed when peppermint oil is distilled by steam. The resulting crystals are clear and colorless. Menthol crystals can be used to alleviate a variety of aches, pains and other ailments. They can be stored for up to three years, provided they are not exposed to high levels of heat or humidity.
Topical Analgesic
A topical analgesic is a cream or a gel that is applied to the skin to ease pain almost instantly. Menthol crystals are often an active ingredient in topical analgesics. Researchers initially thought that menthol crystals were effective because they stimulate the larger nerve fibers, causing them to override the pain message that smaller nerve fibers send to the brain. There is now some debate as to whether or not the menthol actually effects the smaller fibers, thus ending the need for the pain message to be sent at all.
Oral Hygiene/Bad Breath
Menthol has antiseptic properties, which means it can be effective in killing germs and preventing infection. Because of this, it is often added to oral hygiene products, such as toothpaste, dental floss and mouthwash. It can kill the germs that cause bad breath and leave the mouth with a cool feeling. Menthol can also be used to lessen the pain of a toothache.
Decongestant
Menthol can be used to alleviate congestion in the nasal passages and in the chest. It thins the mucus and loosens it, making it easier for the body to expel it. Menthol is also effective at easing the pain of a sore throat. Cold relief products such as Vicks VapoRub, certain cough drops, and some types of facial tissue contain menthol.
Other Uses
Menthol has many other uses as well. Some cigarettes have menthol added to increase flavor, though a benefit is that it also can limit the irritation to the throat caused by smoking. It is also used to flavor candy and gum. Menthol's cooling properties work to ease the pain of sunburn. It can also be used as a topical cream to reduce itching. Some shampoos, lotions and lip balms contain menthol.
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