United Kingdom, July 22 -- Conan O'Brien's new slicked-back hairstyle was the result of treating a painful scalp sunburn.

After social media users questioned why the comedian, 63, had abandoned his trademark voluminous red hair, the television host and podcaster said the unexpected look came after following advice to rub oil into his scalp following an appearance at the opening of the Obama Presidential Center in Chicago.

Conan explained the story during an episode of his Conan O'Brien Needs a Friend podcast, with the former Late Night with Conan O'Brien, The Tonight Show and Conan host saying he developed a severe scalp sunburn last month.

Conan said his skull felt like it was "on fire" before becoming "really itchy" due to his sunbur...