In a heartfelt show of support for his friend and former "Full House" co-star Dave Coulier, John Stamos stepped into the spotlight with a whimsical gesture amid Coulier's battle against Stage 3 non-Hodgkin lymphoma.

Stamos wore a bald cap and assisted Coulier in shaving his head, capturing the moment on Instagram to commemorate this significant milestone in Coulier's cancer journey.

Stamos, who shared a series of photos from the poignant moment, expressed his admiration for Coulier's strength and positivity throughout the challenging experience. He affectionately stated, “Nothing like throwing on a bald cap and flexing some Photoshop skills to show some love and solidarity with my bro @dcoulier. You’re handling this with so much strength and positivity—it’s inspiring. I know you’re going to get through this, and I’m proud to stand with you every step of the way. I love you.”

Coulier disclosed his cancer diagnosis last week, revealing that he discovered a sizeable lump during a recent bout with a chest cold.

The actor noted that he had experienced swollen lymph nodes in the past, but this felt different and more alarming. As he undergoes chemotherapy, he remains optimistic and is scheduled to finish treatment by February.

While many applauded Stamos' gesture of camaraderie, others voiced criticism on social media, questioning the appropriateness of using a bald cap as a form of solidarity.

Some fans expressed that a true gesture of support would involve shaving his own head rather than donning a prosthetic. One commenter remarked, “A bald cap is showing solidarity? You can just take your cap off and be ‘normal’ again. When people take this route, they actually shave their head.”

Yet, there were also significant voices of support defending Stamos, emphasizing the nature of their longtime friendship. One follower countered, “Awwww this is so cute… if Dave isn’t offended by this, you shouldn’t be either.” Another echoed the sentiment, highlighting that true friendship can manifest in varied forms beyond physical appearances.

In response to the backlash directed at his friend, Coulier took to his own Instagram account, stating, “It’s our friendship (me and John) and this is how we are handling a very tough time.

I’m a comedian and humor is what drives me. John knows how to cheer me up, and I laughed out loud when he arrived wearing a bald cap – being a true loving friend and brother.”

This scenario highlights a broader conversation about the expressions of support during difficult times.

Each individual's experience with cancer is unique, and the ways friends and family can offer comfort can vary widely. Numerous cancer survivors have shared insights regarding supportive gestures, revealing that while some appreciate group acts, like a collective head shave, others prefer to retain their individuality even during treatment.

For instance, one breast cancer survivor reflected on her experience, sharing, “It was so fun when my friends threw me a party, and all shaved their heads together. It made it much easier to be a bald woman surrounded by other beautiful bald women!” In contrast, another noted that well-meaning gestures could inadvertently serve as reminders of their plight, explaining the importance of open communication about preferred forms of supportive actions.

The conversation around Stamos and Coulier's interaction serves as an important reminder that while intentions are significant, the impact of gestures should always be considered within the context of the person receiving them.