Larry Flick from Billboard wrote, "Lauper unveils her new Sisters Of Avalon collection, offering a tune that is far more biting and intelligent than fluffy past hits like "Girls Just Want To Have Fun" and "She Bop".

He added further, "The original version of "You Don't Know" unfolds with a jittery funk beat and jangly guitars that deserve a listen at modern rock radio.

Add the underground club perspective of remixers Prince Quick Mix and Junior Vasquez, and you have a single that aims to hit every possible mark.

"[1] Kevin Courtney from Irish Times said, "The unusual girl is back at last, and that Hazel O'Connor-on-helium voice still has that girlie edge, but as the song builds in intensity, she sounds in danger of totally eclipsing Bonnie Tyler in the overkill department, and when she prances around in her new video, she looks like she's stuck in a jerky 1980s movement.

"[3] A reviewer from Music Week gave it four out of five, noting that "Lauper's trademark vocal performance is more restrained for this nicely produced, acoustic-style pop song.