| abstract |
The present invention provides a parakeratosis inhibitor, a pore-shrinking agent or an agent for preventing/ameliorating rough skin which has a function of inhibiting parakeratosis, shrinking a pore, preventing/ameliorating rough skin or the like, does not have any safety problem such as sensible irritation and has high safety. Further, it is intended to provide an external composition for skin in which a compound having such a function is blended. The parakeratosis inhibitor, pore-shrinking agent or agent for preventing/ameliorating rough skin comprises one or more compounds selected from the group consisting of ss-alanine derivatives and salts thereof. Further, the external composition for skin contains one or more compounds selected from the group consisting of ss-alanine derivatives and salts thereof which are the parakeratosis inhibitor, pore-shrinking agent or agent for preventing/ameliorating rough skin. |