Billie Eilish says her brother Finneas O'Connell inspired her to start a skincare routine after he had 'really bad' skin as a teenager

• Billie Eilish shared her post-concert makeup routine in a new video from Vogue.
• Eilish, 20, started caring for her skin after she was advised by her brother, Finneas O'Connell, 24.

Billie Eilish revealed it was her brother, Finneas O'Connell, who suggested she take better care of her skin.

The "Happier Than Ever" singer is in the midst of her world tour, but showed off her post-concert skincare routine in a new video from Vogue. Eilish, 20, explains in the video that she didn't care about her skin until she was a pre-teen.

"I have had a skincare routine since I was, like, 12-ish. Before that, I never thought about it," Eilish said. "It was actually my brother that told me to care about it."

Eilish said that O'Connell struggled with his skin as a teenager and warned that she needed to take care of herself.

"He went through some really, really bad skin years," Eilish said of O'Connell, 24. "He was four years older than me, so he was like, 'Dude, you better take care of your fucking skin, man.'"

Eilish continued that she took his advice and initially went to him for product recommendations.

"He basically showed me all the stuff that I started using then, which was random drugstore stuff we didn't really know anything about," she said.

Her current skincare routine includes Josie Maran face wipes and products from celebrity esthetician Biba de Sousa.

Eilish and O'Connell have publicly spoken about their sibling and working relationship over the years. O'Connell is Eilish's main collaborator.

The pair wrote music for Pixar's "Turning Red" and worked together on both of Eilish's studio albums. In March 2020, O'Connell told New York Times Magazine that he initially refused to help Eilish write "Everything I Wanted" because it was inspired by suicidal thoughts.

"It was a period where I was really worried about my sister, and I felt like an enabler in helping her write a song as bleak as that song was," O'Connell said. "Like the musical equivalent of giving an alcoholic another beer: 'I'm not going to support this.'"