An ointment is provided. The ointment stably comprises an oxazole compound that has specific inhibitory activity against PDE4 and that is represented by the following formula (11). The ointment can be efficiently absorbed into the skin.提供了一種軟膏。該軟膏穩定地包括一種對於PDE4具有特異性抑制活性並且由以下化學式(11)表示的唑化合物。該軟膏可以被有效地吸收進入皮膚。