Journal · Founder · 5 min
What passes our stability test, and what doesn't.
Thirty-six months at forty degrees Celsius, with real UV exposure. Not many formulas make it through.
Dr Judey · Biomedical Emporium®
15 June 2026
Our stability test is the closest we can build to a Dubai bathroom. Thirty-six months at forty degrees Celsius, with intermittent humidity, and with two hours of daily UV to mimic morning light through a bathroom window. Formulas that separate, discolour, drop pH more than half a point, or lose actives by more than ten percent do not ship.
Roughly one in three iterations passes on the first attempt. The other two are rebuilt.
Read next
A travel routine that survives Gulf humidity to European cold.
The routine that works at forty degrees and eighty percent humidity is not the routine that works at four degrees and thirty. Five swaps to make on landing.