'Full House' actor John Stamos sported a bald cap as he shaved Dave Coulier's head amid his friend's cancer battle. Tom Brady’s Super-Rare Selfie With His & Bridget Moynahan’s Son Jack Shows the Unique Facial Feature They Share

He learned of his cancer after an upper respiratory infection in October resulted in his lymph nodes swelling quickly, with one area growing to the size of a golf ball. The growth led to Coulier undergoing PET and CT scans and a biopsy at the suggestion of his doctors.

As Dave Coulier continues to go through cancer treatment, he is getting some support from his friend John Stamos. Coulier debuted his newly shaved head in a photo posted to his “Fuller House” co-star’s Instagram page on Monday,

John Stamos’ gesture to wear a bald cap in “solidarity” with his Full House co-star Dave Coulier was slammed as being “shallow.” While some admired John’s support for his friend, who was diagnosed with an “aggressive” form of cancer,

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,

John Stamos is showing “solidarity” amid Full House costar Dave Coulier’s cancer battle. Stamos, 61, took to social media on Monday, November 18, to share photos in which the actors smiled together, both revealing their bald heads.

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.