Oil of Every Pearl's Un-Insides (stylised in all caps) is the debut studio album by English recording artist and producer Sophie and the only one to be released during her lifetime.

Oil of Every Pearl's Un-Insides incorporates an eclectic array of genres and styles including avant-pop, industrial music, glitch music, electro, ambient, dance-pop, EDM, ambient house, industrial techno, drone, synth-pop, Eurodance, contemporary R&B, dream pop, trap, bubblegum pop, and musique concrete.

[23][24] The first single, "It's Okay to Cry", was released alongside a self-directed music video of Sophie, naked, singing directly to the camera in a studio setting behind digital skies and rainbow.

[29] Writing for Pitchfork, Sasha Geffen praised the album as "sprawling and beautiful, while still keeping the disorienting, latex-pop feel of her fascinating production technique" and said that while Sophie's "early singles exhibited a keen feel for economy and a killer sense of humor, OIL makes a bid for transcendent beauty.

Where Product felt like a collection of alien pop hits, Oil of Every Pearl's Un-Insides abounds with interludes, passages, and major statements that allow her to dig deeper on the album's second half.

"[30] Joe Rivers of Clash wrote, "Sophie manages to incorporate the personal without detracting from what set her apart in the first place, and it makes for a record that's as affecting as it is thrilling.