The protection goddess of White, Birth, Life, Giving, Renewal, etc. often appears as nubile, smooth-skinned, an indeterminate physical age in her awing avatar form.

Dark, Death, Life, Removing usually appears as a craggy, wrinkled, and weathered in his awing avatar form.
His form is that of age and complexity where hers is more of innocence and simplicity. It is said when your eyes are drawn to the fractals that form the wrinkles in his face, you can see into them forever in an instant.

The Pantheon - a complete list of all the facets of the Dual