Why this is here now
Separate broad tone evening from local contrast correction.
Coverage is still largely a model default, so start with the smallest film that proves what actually needs more opacity.
Measure this
From normal viewing distance, mark which zones still create unwanted contrast after one thin base pass. Add product only to those zones and compare the total film needed.
Smallest useful test
Change only the profile field behind that weight, and watch which products move and by how much.
Decision matrix
Why: a weight is a model prior, not a measurement of your face
- Keep constant
- Pick the single largest weight in the breakdown and read what it says it is responding to.
- Change
- Change only the profile field behind that weight, and watch which products move and by how much.
- A useful result supports
- A ranking that reorders tells you the field matters to the model. A ranking that barely moves tells you the field was not what was deciding.
- It cannot establish
- It cannot validate the weight. No scoring weight in this desk carries a citation, and the score is an index rather than a probability.
Sources for this finding
- Why scientific products do not always work: mechanistic reasoning ↗
Lab Muffin Beauty Science · Michelle Wong, PhD · Separating plausible mechanism from demonstrated outcome.
reviewed 2026-09-07 · current
- A re-evaluation of the comedogenicity concept ↗
Draelos ZD, DiNardo JC · Journal of the American Academy of Dermatology 2006;54(3):507-512 · Finished products containing comedogenic ingredients were not necessarily comedogenic — the ingredient-list inference is invalid.
reviewed 2026-09-13 · current