As Dave Coulier continues to go through cancer treatment, he is getting some support from his friend John Stamos.

Decades after TV sitcom Full House ended, costars Dave Coulier and John Stamos are more like family. They're so close, in fact, that Stamos covered up the hair that his character, Uncle Jesse, once loved so much.

The star of "Full House," John Stamos, shows support for his friend and co-star, Dave Coulier, who is battling an aggressive cancer. John Stamos shared a touching gesture of solidarity on Instagram with Dave Coulier,

Earlier this month, the Full House actor - known for playing Joey Gladstone on the sitcom, revealed he had been diagnosed with a "very aggressive" form of non-Hodgkin lymphoma and was undergoing chemotherapy treatments.