John Stamos shared a post in solidarity with former Full House co-star Dave Coulier — but fans weren't feeling the love.

John Stamos is showing his support for his former "Full House" co-star, Dave Coulier, amid his cancer diagnosis.

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

Former "Full House" co-stars John Stamos and Dave Coulier shared photos of them hanging out amid Coulier's battle with cancer.

Dave Coulier, who rose to fame as Uncle Joey on the family sitcom Full House, has been diagnosed with stage 3 non-Hodgkin's lymphoma.

John Stamos is donning a bald cap after his "Full House" co-star Dave Coulier was diagnosed with "very aggressive" stage 3 Non-Hodgkin lymphoma.

John Stamos was ridiculed on social media for wearing a bald cap with good pal and "Full House" co-star Dave Coulier, who recently revealed he has cancer.

John Stamos completely transformed from his classic dark hair to a surprising new look recently for a very special reason, looking almost unrecognizable. The Big Shot star took to Instagram to share a bonding experience he had with his Full House co-star and longtime friend,

It was a shock.” Now, on Instagram, his “Full House” co-star John Stamos shared images of the lifelong friends together. Stamos was wearing a bald cap and shaving Coulier’s head. “Nothing like throwing on a bald cap and flexing some Photoshop skills to show some love and solidarity with my bro,

John Stamos showed up in a bald cap to help shave his 'Full House' co-star's head, but the show of solidarity didn't sit right with many.