Amaranth is cold in nature, good at relieving carbuncles and heat toxins, and can treat acne caused by heat toxins. Acne is known as acne, and its occurrence is mostly related to factors such as innate endowment, overeating of spicy and thick flavors, and unbalance of the impulses, etc. The location of the disease is in the skin’s couper (pores), which is closely related to the lungs, stomach, and liver, and the basic mechanism of the disease is that heat and toxins are overflowing into the skin. Amaranth has the efficacy of clearing heat and detoxification (removing heat and toxicity from the body), cooling the blood and stopping bleeding (making the blood cool and moist, preventing bleeding), stopping dysentery, which can be used to treat feverish blood dysentery (dysentery caused by feeling heat and toxicity and seeing blood in the stools), blood-heat hemorrhage, carbuncles and swollen toxins, eczema and dengtoxin (acute infectious disease, which can be seen in the skin as red as a painted pigment) and other illnesses. Amaranth should be used with caution for people with cold spleen and stomach (spleen and stomach weak and cold), and people with intestinal slipperiness for leakage. When discomfort occurs, one should consult a doctor in time and choose medication under the guidance of the physician’s diagnosis, and should not use medication on one’s own in order to avoid delaying one’s condition.