I can't tell whether this was from abrasives (typically I either use salt or baking powder) or Scotch-Brite pads, but every 6 months or so, I would do an oxyclean soak and scrub on my Spigleau glasses (use the tulips for just about everything). After most uses I will just spray with vinegar solution, then heavy rinse with crazy hot water, and maybe a paper towel rub.
After spending months trying to figure out why head on my beers would quickly dissipate, I looked closer at the glasses, and noticed pretty visible scratches in the direction of my scrubbing. Likely the cause of the head falling quickly.
Upon reading this, I can't imagine that either salt or baking powder is harder than glass, so it must be the pads.