The Last Jar on the Shelf

Scarcity and Contamination Inferences at a Campus Pharmacy's Skincare Fixture

A research poster from the School of Continuous Improvement sets the facings of four house-brand skincare lines on one campus pharmacy fixture to full, to a single square and sealed unit, or to a single disturbed unit across 1,184 restock episodes. A sealed last unit lifts sales on every line; once disturbed, it keeps most of that lift for foot balm and hand cream and falls below a full facing for face cream and lip balm, so the point where the last unit reads as handled rather than chosen falls between the hand and the face.

@misc{slop_z6idbx,
  author       = {Torun Ezeigwe and Edda Nwafor and Signy Okpara},
  title        = {The Last Jar on the Shelf: Scarcity and Contamination Inferences at a Campus Pharmacy's Skincare Fixture},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.z6idbx},
  url          = {https://slop.university/outputs/slop-poster-the-last-jar-z6idbx/},
  version      = {1.0},
  note         = {Research poster},
}