The present invention provides an allergen reducing agent containing seared shells. In addition, the present invention provides a method for reducing allergens, which includes the step of contacting the seared shells with the allergens. The seared shells are preferably powder.本發明提供一種含有經煆燒的貝殼的過敏原減少劑。另外，本發明提供一種過敏原減少方法，包括使經煆燒的貝殼與過敏原接觸的步驟。經煆燒的貝殼較佳為粉末。
