Sean “Diddy” Combs’ gray hair may have shocked jurors at the start of his sex-trafficking trial — and that could help him, experts say.

The 55-year-old music mogul-turned-accused criminal perv doesn’t have access to hair dye in jail and first revealed his graying hair in court a few months ago, although the public only saw it in sketches.

The fact that jurors are seeing his gray in person may now work in Combs’ favor, jury consultant Alan Tuerkheimer told Us magazine.

“The hope is that, given the lascivious nature of some of the alleged acts he participated in, the jury sees a more seasoned and grown-up version of his former self,’’ Tuerkheimer said of Combs.

Los Angeles criminal-defense lawyer Joshua Ritter added, “One of the central questions [jurors] have in their head is, ‘Could this person have committed these crimes?’

“And if you’re looking over at someone who appears gray — gray hair, gray beard, dressed in kind of a sweater and doesn’t look like the kind of person that would commit the sorts of atrocities that are going to be alleged — that might play at least a subconscious role in their heads.”