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How should I evaluate samples and do you support stability testing?

Evaluate aroma, appearance, pH and formulation compatibility on arrival; we support further stability testing on request.

Evaluation StepWhat to Check
AromaIntensity, freshness, depth vs your brief
AppearanceClarity, color, absence of sediment
pH & SGMatch COA values
Formulation testMiscibility in your base formula
Skin testPatch test on target users
Stability services we provide:
  • Accelerated stability (40°C / 75% RH, 3 months)
  • Freeze–thaw cycles (5 cycles)
  • Long-term stability (25°C, 12 months)
  • Formula compatibility report with your base

Samples from the actual production batch ensure your evaluation matches bulk supply. Share your test protocol — we can run or coordinate stability testing with certified labs.

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Guilin Four Seasons Sunshine

Founded in 2006, Guilin Four Seasons Sunshine F&F Co., Ltd. is a natural plant extract manufacturer and OEM/ODM partner in Guilin, China, combining proprietary Living-Fragrance physical extraction with supercritical fluid extraction to deliver pure, traceable botanical ingredients to global food, flavor, fragrance and personal care brands.