(A) an effective amount of at least one of (A) isosorbide, which is effective for penetration of periodontal pathogenic bacteria into a biofilm and is excellent in bactericidal effect against airborne bacteria, has a good appearance stability by suppressing turbidity at high temperature storage, (C) an N-acyltaurine salt in an amount of 0.1 to 0.6% by mass, (D) a nonionic surfactant in an amount of 0.1 to 0.8% by mass in a composition for liquid oral care containing (B) cetylpyridinium chloride To provide a liquid oral composition.치주병원성의 바이오 필름에의 침투 살균 효과 및 부유 세균에의 살균 효과가 우수하고, 또한, 고온 보존시의 탁함이 억제되어 양호한 외관 안정성을 가지며, 치주병의 예방 또는 억제에 유효한, (A) 이소프로필메틸페놀 및 (B) 염화세틸피리디늄을 배합한 액체 구강용 조성물에, (C) N-아실타우린염을 0.1∼0.6질량%와, (D) 비이온성 계면활성제를 0.1∼0.8질량%를 배합한 액체 구강용 조성물을 제공한다.
