Anti-aging skin agent for external use

Aging, wrinkles due to aging, wrinkles, sagging, and spots, as well as prevent or ameliorate problems in appearance of the skin, for maintaining or enhancing the barrier function in the skin, provides an anti-aging skin external composition above problems by the an object of provide the active ingredient as adenosine N1- oxide 5'-phosphate, its analogs and one or comprise two or more anti-aging skin external agent selected from the salts by to resolve.