Disclosed is a simple operation , a relatively short time the dental bleaching agent capable of obtaining an effective bleaching effect to be able to bleaching , and to provide a method for bleaching teeth . A and at least hydrogen peroxide, alkali metal bicarbonate , hydrogen carbonate alkaline earth metal salts , alkali metal carbonate , carbonate alkaline earth metal salts , alkali metal percarbonate salt and percarbonate alkaline earth metal salts , from one or more and becomes bleaching accelerator is selected from , as well as a tooth bleaching agent comprising an aqueous solution containing a water-soluble thickener , hydrogen peroxide concentration in tooth in Fang bleach is from 7 to 25 in mass % , in the metal salt concentration is 0.1 ( mol / liter ) or more , is less than or equal to the saturation concentration at 25 , and uniformity of the aqueous solution in pH6.7~9.5 in the tooth tusk for bleach is 25 tooth bleaching agents that form . [ Selection Figure ] None【課題】簡略な操作により、比較的短時間で漂白処理できて有効な漂白効果を得ることができる歯牙用漂白剤、及び歯牙の漂白方法を提供する。【解決手段】少なくとも過酸化水素と、炭酸水素アルカリ金属塩、炭酸水素アルカリ土類金属塩、炭酸アルカリ金属塩、炭酸アルカリ土類金属塩、過炭酸アルカリ金属塩、及び過炭酸アルカリ土類金属塩から選択された1種以上からなる漂白促進剤と、並びに、水溶性増粘剤とを含む水溶液からなる歯牙用漂白剤であって、該歯牙用漂白剤中の過酸化水素濃度が7~25質量%で、上記金属塩濃度が0.1(モル/リットル)以上で、25℃における飽和濃度以下であり、かつ該歯牙用漂白剤が25℃においてpH6.7~9.5で均一の水溶液を形成する歯牙用漂白剤。【選択図】なし
