It is intended to provide a glycation inhibitor having an excellent glycation inhibitory action and a high safety. The glycation inhibitor containing as an active ingredient, a processed material of at least one kind selected from the group consisting of black soybean seed coats, mate leaves (green), Linden flowers, leaves of Quercus salicina, black rice seeds, Willow bark/shoot, an aerial part of Eyebright, Black cohosh roots, Agni fruit, artichoke leaves, lychee seeds, Catuaba bark, an aerial part of oats, passion vine leaves, Cha de Bugre leaves, buckwheat leaves, Silybum marianum fruit, Angelica keiskei leaves, Devil's claw roots, tabebuia bark, Agaricus mycelia, Pfaffia roots, Euterpe oleracea fruit, the whole plant of Cladosiphon okamuranus and Petasites japonicus stems/leaves is provided.
