Psyllium is generally not a cure for gray hair, and it is recommended that it be used under the guidance of a doctor. Psyllium, its flavor is sweet, cold; attributed to the liver, kidney, bladder meridian. It has the effect of clearing heat and diuretic, cooling the blood and detoxifying. Clinically, it is mainly used for the treatment of heat knot bladder, dysuria (irregular urination), gonorrhea (cloudy urine and leukorrhea), summer-damp diarrhea, epistaxis, blood in urine, liver-heat, sore throat, carbuncle, swollen sores and poisons. It should be noted that the adverse effects of Plantago Ovata are not yet clear, and Plantago Ovata is contraindicated in cases of deficiency and slippery essence. The efficacy of a single Chinese medicine is limited, and clinically it needs to be used with other Chinese medicines after identification by a traditional Chinese medicine practitioner.