The patch agent of the present invention is a patch agent comprising a support
made of a synthetic fiber and an adhesive layer mounted on the support, and having
a bending resistance of 10 to 30 mm and a probe tack value of 0.25 to 1.2 N. The
patch agent of the present invention can fully be prevented from peeling off at
the time of application and can fully suppress the rash of skin and the pain upon peeling.