The Calibration
Why heat breaks chemistry.
The industry treats temperature as a footnote. We treat it as the first variable. Here is what happens when a serum designed for a 22 degree lab meets the Indian summer.
01
The Yellowing Problem
L-Ascorbic Acid oxidizes within days above 35 degrees. The serum turns yellow, and that yellow is dead Vitamin C. We use 3-O-Ethyl Ascorbic Acid: same activity, stable through 90 days at 43 degrees.
02
The pH Drift
Skin's acid mantle sits at 4.5 to 5.5. Heat shifts a formula's pH and the actives stop working. Every pH Matter batch holds drift to within 0.05 across 90 days at 43 degrees.
03
Emulsion Failure
Oil-in-water creams phase-separate at 45 degrees and clog pores in tropical heat. pH Matter formulas are strictly lipid-free aqueous gels. Zero separation, zero comedogenic risk.
Tested against the real thing.
43C
Thermal stability test
90 days
Accelerated ageing
0.05
Max pH drift allowed
400ppm
Hard-water tolerance