7/23 9:55 AM PT -- Ric Flair just gave fans a closer look at the damage ... revealing the large scar on his forehead.
Naitch also shared another apology to the ATL Comic Convention for missing his planned fan event ... but based on the image, we take it his supporters will understand.
Ric Flair just knocked out skin cancer once again -- the wrestling legend revealed he underwent successful treatment for melanoma.
The 76-year-old shared the news Tuesday morning via social media ... featuring a photo of himself in a medical facility.