In detergent and cleaning product production, one of the most frustrating issues is clouding or phase separation after adding fragrance. This is not just a visual defect—it often indicates a formulation compatibility problem between fragrance and base system.
1. Poor Solubility in Surfactant System
Fragrance oils contain:
Aromatic compounds
Fixatives
Solvent carriers
If the system cannot dissolve them properly, you will see:
Milky appearance
Oil droplets
Layer separation
This is especially common in low-ethoxylated surfactant systems.
2. High Hydrophobic Content in Fragrance
Some fragrance formulas contain:
Heavy musks
Resin materials
High molecular weight fixatives
These ingredients improve longevity but reduce solubility.
Result:
Instability in transparent detergents
Phase separation after storage
3. Incorrect Addition Sequence
Adding fragrance at the wrong stage can cause:
Poor dispersion
Local oversaturation
Immediate clouding
Proper industrial sequence is critical.
4. Temperature Shock During Production
If fragrance is added:
At too high temperature → volatilization
At too low temperature → poor dispersion
Both lead to instability.
5. Wrong Solubilizer Ratio
Without proper solubilizers or co-solvents:
Fragrance cannot integrate into system
Micro-droplet formation occurs
Solution Approach
Adjust fragrance polarity
Improve solubilizer system
Optimize surfactant balance
Test at different temperatures
Conduct 30-day stability test
Conclusion
Clouding and separation are not simply “bad fragrance problems”—they are system compatibility issues between fragrance chemistry and detergent formulation design.
Proper engineering can fully solve this problem in industrial production. If you have any of these problem, feel free to contact Sinyu Aromas.
