A medicament for preventive and/or therapeutic treatment of a bowel diseases such as inflammatory bowel diseases including Crohn's disease, which comprises as an active ingredient a retinoid such as, for example, 4-[(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)carbamoyl]benzo- ic acid.

A medicament having an anti-wrinkle action, which comprises as an active ingredient a retinoid having a fundamental structure of a phenyl substituted carbamoyl benzoic acid or a phenyl substituted carboxamide benzoic acid (for example, 4-(2,4-bistrimethylsilylphenylcarboxamide) benzoic acid, 4-[(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl) carbamoyl] benzoic acid, or the like).