To provide a novel material having an endoplasmic reticulum chaperone production promoting effect.SOLUTION: The present invention provides an endoplasmic reticulum chaperone production promoter containing an astaxanthin as an active ingredient. The present invention also provides an endoplasmic reticulum chaperone production promoter wherein the endoplasmic reticulum chaperone is Binding immunoglobulin Protein (BiP).SELECTED DRAWING: None
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