Meanings
Usage patterns
〈物〉に艶が出るfor something to develop a shine/luster
Using this wax gives the car a shine.
声に艶があるfor a voice to have a rich, mellow quality
Her voice has a unique mellow quality.
〈事〉に艶を添えるto add charm or color to something (a story, event, etc.)
That anecdote adds a touch of color to the story.
〈物〉に艶を出すto bring out a shine or polish in something
This shoe develops a shine when polished.
肌の艶を保つto maintain the glow or freshness of one's skin
Moisturizing helps you keep your skin's glow.