Dave Coulier Defends John Stamos Against 'Negative Comments' for Wearing Bald Cap in Support of Costar's Cancer Journey: 'True Loving Friend'

"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," Coulier wrote on Instagram

Dave Coulier isn’t tolerating any hate.

On Tuesday, Nov. 19, the comedic actor defended former Full House costar John Stamos on Instagram after backlash erupted the day prior over a series of photos the pair shared. The images featured Stamos, 61, wearing a bald cap to support Coulier, 65, amid his cancer journey, leading some people to call out the General Hospital alum for being insensitive since he could take the cap off and have his hair back.

“I’m sorry to see a bunch of negative comments as I’ve just begun my cancer journey,” Coulier's post began. “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.”

“I have heard from so many people who have been inspired enough by my words and actions to say that they are going to check in with their doctors and get mammograms, a colonoscopy or a prostate exam,” he continued. “I’m still going to laugh in the face of adversity. When I lost my sister, Sharon, my mother, Arlen, and my niece, Shannon to cancer, we tried to stay positive, and we made each other laugh through the worst of it. I’m choosing to spread the word about early cancer detection to help people. That’s just who I am.”

Coulier, who also turned the comments off on the post, concluded: “I wish nothing but love for all of you.”

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Stamos shared the photos of him in the bad cap alongside Coulier on Nov. 18. The post also included images of Stamos shaving his longtime friend’s head and posing with Coulier and his wife Melissa.

“Nothing like throwing on a bald cap and flexing some Photoshop skills to show some love and solidarity with my bro @dcoulier,” Stamos wrote in the caption. “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”

“(p.s. - @melissacoulier is the most wonderfulest - your true life line!),” he added.

The comments were quickly flooded with criticism, with one person writing, “So he's not really supporting him. He's posing for a photo op.”

Another commented, “Aww. But really @johnstamos? You didn’t shave your head with him?. Unfortunately, this isn’t brotherhood. Your hair isn’t that important coming from someone who has good hair. I would never not shave my head in true solidarity.”

Related: Dave Coulier Details How Wife Melissa Has Created a 'Whole Nutrition Plan' for Him amid His Cancer Journey (Exclusive)

People also came to Stamos’ defense, with some noting that he can’t shave his head due to his acting jobs and others sharing their own experiences.

“As someone who has had cancer three times I NEVER wanted anyone to shave their head for me,” one follower explained. “I think this is great and hilarious and I’m sure Dave didn’t really want him to shave his head.”

Coulier revealed his stage 3 non-Hodgkin lymphoma diagnosis exclusively to PEOPLE on Nov. 13. He shared that an upper respiratory infection in October resulted in swelling of his lymph nodes, which led him to get tested. He was eventually be diagnosed with cancer.

“Three days later, my doctors called me back and they said, ‘We wish we had better news for you, but you have non-Hodgkin's lymphoma and it's called B cell and it's very aggressive,’” he told PEOPLE. “I went from, I got a little bit of a head cold to I have cancer, and it was pretty overwhelming."

"This has been a really fast roller coaster ride of a journey," he added.

After receiving the news, he shared the information with his Full House family — including Stamos, Candace Cameron Bure, Andrea Barber, Jodie Sweetin, Lori Loughlin, Scott Weinger and series creator Jeff Franklin.

“I didn't want them to hear it from someone else, so I sent a text message out,” the actor explained, adding that the response from everyone “was immediate.”

“It was just this outpouring of, ‘I will be there. You just name the time, and I know you're in great hands with Mel, but what can we do?’ It really is overwhelming the love that we have for each other. We've been there for so many years for each other and it's pretty remarkable.”