According to some spice smell normal α-brain waves slow down later, from the 8-10Hz / S dropped to 4-7Hz / S is θ-wave (trance wave), and then further reduced to 2.5-3.0Hz / S that δ-flow (wave sleep). Animal experiments also confirmed that the aroma of these spices are the experimental animals did make "quiet", "put me to sleep." According to these characteristics our development of a "long-term sleep flavoring agent." People will feel sleepy after sniffing out and sleep "deep", which will undoubtedly bring good news to many of the insomnia. It does not side effects and long-term use of sleeping pills due to "drug dependence" is absolutely safe and harmless to human body. Such as the addition of 10 grams each pillow sleep flavoring agent, without seal, pillow hypnotic effect can more than 6 months. Plastic bags are not opened the case may be few fragrant.