The present invention intends to provide a sense-improving agent which is safe and shows the effect of improving the reduction in sense at periphery by intake or application on skins daily. Besides, the present invention also intends to provide sense-improving food and drink, sense-improving feed and sense-improving cosmetics which show the effect of improving the reduction in sense at periphery by oral intake or application on skins.A sense-improving agent which uses a basic protein fraction derived from milk or its decomposed product as an effective component, is provided. By taking the basic protein fraction derived from milk or its decomposed product orally or applying them on skins directly, it is possible to improve the reduction in sense, especially at periphery and produce the food and drink, feed and cosmetics for improving sense.本發明的目的在於提供一種感覺改善劑，其安全且藉由日常上攝取或對於皮膚的塗佈，展現改善於末端的感覺之鈍化的效果。又，本發明的目的在於提供一種感覺改善用飲食品或飼料、化妝品，係藉由經口攝取或對於皮膚的塗佈，展現改善於末端的感覺之鈍化的效果。本發明提供一種將來自乳汁的鹼性蛋白質級分(fraction)或來自乳汁的鹼性蛋白質級分分解物作為有效成分使用的感覺改善劑。藉由將來自乳汁的鹼性蛋白質級分或來自乳汁的鹼性蛋白質級分分解物經口攝取、或直接塗佈於皮膚，可改善感覺，特別是改善於末端之感覺的鈍化，並可作為感覺改善用飲食品或飼料、化妝品。
