The heads of the haircare company want the groom-to-be to become a spokesman for them - and they're sending him a basket of goodies ahead of his 2011 wedding to Kate Middleton in the hope he'll be suitably impressed.
A company spokesman tells Life & Style magazine, "We’ve been watching Prince William’s growing bald spot closely for years, and we believe Rogaine can help.
"We’d love to send him our new Unscented Men’s Rogaine Foam. William would be the perfect spokesman for Rogaine because whether you’re a prince or an average Joe, hereditary hair loss affects one in four men.
"When he’s on the altar and the world is looking at the back of his head, he won’t have to worry about the hair that’s not there."