The main component of cinnabar is mercury sulfide, which is nonvolatile, basically insoluble in water and has low toxicity. Wearing cinnabar is harmless to human body. Cinnabar is mercury, but as long as it is not refined into mercury, it will be fine. Generally, try not to let the cinnabar bracelet touch your mouth when wearing it.
Extended data:
The effects of cinnabar: clearing away heart fire, calming the nerves, and removing toxic substances. It is used for palpitation, insomnia, dreaminess, epilepsy, convulsion, blurred vision, sores on the mouth and tongue, laryngitis and sores. Cinnabar can soothe the nerves and is suitable for all kinds of mental disorders.
Cinnabar is the best thing to ward off evil spirits, and it also has the function of calming the nerves. Many cardiac sedatives contain cinnabar.
References:
Baidu encyclopedia-cinnabar