Watch Benny Blanco attempt to do Drew Barrymore’s makeup with help from Selena Gomez

Selena Gomez and Benny Blanco teamed up to do Drew Barrymore’s makeup after she showed up makeup-free to her eponymous talk show.

During Thursday’s episode of the “Drew Barrymore Show,” Barrymore praised Gomez for her Rare Beauty makeup line and asked her and her fiancé to help her with her glam.

“I came out here with no makeup,” the “50 First Dates” actress, 50, explained. “I have everything here. You can do some blush and some contour or highlighter!”

Gomez, 32, suggested they stick to complexion products, because she did “not want to have [Blanco] try mascara” on Barrymore.

The “Sunset Blvd” singer — who was repping her beau with a gold “B” necklace — took to painting one side of Barrymore’s face, while the record producer, 37, did the other side.

“I can’t believe I’m getting to do this, by the way,” Barrymore squealed with excitement.

Blanco initially struggled to decide which products to use and admitted that the “hardest part” was figuring out what every product does.

The famed songwriter eventually settled on a contour stick and drew brown lines on Barrymore’s lower cheek and the side of her forehead.

“Just stay still. Can I touch your face?” a confused Blanco asked. “Are you supposed to do it with your finger? Should I dip it in water?”

Barrymore and Gomez –– who effortlessly blended contour and blush on her side of Barrymore’s face –– both laughed while chatting about the couple’s new joint album, “I Said I Love You First.”

Blanco continued his effort, scooping blush onto his finger to draw three vertical lines from Barrymore’s cheeks to the top of her lips.

The audience immediately burst out laughing, so Blanco quipped, “Why is everyone laughing? I think I’m doing a great job! I don’t know what you think is so funny.”

“I think mine’s pretty good,” Blanco said while standing up and admiring his work.

Barrymore –– who had one side of her face nearly perfectly blended and another side left with brown and pink stripes –– sweetly agreed with Blanco.

“I think I’m going to like yours, too!” Barrymore gushed.

Blanco isn’t a total stranger to the makeup world, as he previously went viral for attempting to use some Rare Beauty products on Gomez earlier this month.

Perhaps the star will perfect his technique in time for their wedding.