Abstract: An object of the present invention is to provide a safety sensation-improving agent that can improve dulled peripheral sensations through daily ingestion or application to the skin. Another object of the present invention is to provide a sensation-improving food, beverage, feed, or cosmetics that can improve dulled peripheral sensations through oral ingestion or application to the skin. A sensation-improving agent containing a milk-derived protein and/or a hydrolysate therefrom as an active ingredient is provided. The milk-derived protein and/or the hydrolysate therefrom can be orally ingested or applied direct to the skin to improve dulled sensations, particularly peripheral sensations, and be formed into a sensation-improving food, beverage, feed, or cosmetics.