Why 45°C stability testing decides whether your product survives the Gulf

A cream that looks perfect in Guangzhou can split in a Dubai warehouse. Here is what accelerated testing actually catches.

Temperature is the quietest killer of cosmetics in the Gulf. A container can sit at 50–60°C on a quay, then move into an air-conditioned mall. The formula has to survive both.

What accelerated testing catches

• Emulsion separation and creaming at high temperature
• Viscosity drift that changes how the product pumps and spreads
• Colour fade or oxidation in vitamin C and botanical lines
• Fragrance degradation and off-notes
• Packaging deformation, leakage and label lift

What a real protocol looks like

Three months at 45°C is the usual entry ticket, with a parallel 40°C/75% RH run and a freeze-thaw cycle for export routes. Samples should be in the final pack, not a lab jar, because the pack is often what fails.

What to ask before you approve a sample

Ask for the test conditions, the duration, the pack used, and the actual observations — not just a pass/fail line. A factory that can show you the data has usually also formulated for the climate.