METHOD OF PREVENTING FADING OF TAR COLORANT AND TAR COLORANT-CONTAINING COMPOSITION WITH PREVENTED FADING

摘要

The present invention provides a method of suppressing fading of a tar colorant. More specifically, the present invention provides a method of suppressing a tar colorant fading phenomenon that occurs specifically in compositions containing (a) the tar colorant, and (b) at least one of reducing sugars, ascorbic acid compounds, or metals. This method can be attained by mixing (c) at least one selected from the group consisting Of isoquercitrin, enzymatically modified isoquercitrin, rutin, enzymatically modified rutin, Chinese bayberry extract, and rosemary extract into such a composition, thus making the component (a), the component (b) and the component (c) coexist. The present invention further provides a composition for which fading of a tar colorant is suppressed using the above method, more specifically a composition containing at least one of reducing sugars, ascorbic acid compounds, or metals in addition to the tar colorant.