The first image showed the former costars and longtime friends posing — Coulier, 65, with his head shaved, and Stamos wearing a baldcap in solidarity. For the second swipe, Stamos laughed with Coulier while helping him to shave his head. The final photo showed Stamos and Melissa both kissing Coulier's bald head.

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

"Full House" stars and friends John Stamos and Dave Coulier 's bond is as strong as ever. This was made apparent after Coulier revealed on Wednesday he had been diagnosed with stage 3 non-Hodgkin lymphoma, reports People.