| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cell-activating agent originating from natural substance having excellent keratinization acceleration action or cell proliferation acceleration action and provide an external preparation for skin including the same. <P>SOLUTION: The cell-activating agent includes, as an active ingredient, sap of a tree of white birch (Betula platyphylla Sukatchev var. japonica Hara). The external preparation for skin includes the agent. <P>COPYRIGHT: (C)2007,JPO&INPIT |
