There is no so-called “appropriate” time to use Ruyi Jinhuang San, it can be used at any time. Ruyi Jinhuang San is composed of turmeric, rhubarb, cypress, atractylodes macrocephala, thick park, Chen Pi, etc. It can clear away heat and detoxification (clearing away heat and toxicity in the body), and reduce swelling and relieve pain. It is used for sores, boils, swelling and pain caused by heat and toxic stagnation of the skin, such as carbuncle (a kind of poisonous sores, acute suppurative disease occurring on the surface of the body, limbs and internal organs), hair and back, pediatric dengtoxin and so on. Symptoms of skin redness, swelling, heat, pain, can also be used for bruises. Ruyi Jinhuang San is prohibited in the broken skin, pregnant women, infants and young children, etc.; note that this drug is for external use, can not be taken internally, and can not be used for a long period of time, a large area. If there is a need for medication, it should be used under the guidance of a doctor to identify the evidence, and should not be used blindly on its own, so as not to cause adverse consequences.