Table 4: Final specifications of the cationic nanoemulsions.

SpecificationsValues

AspectMilky white to translucid
pH5.5–7
Osmolality180 to 300 mOsm/kg
Zeta potential+20 to +40 mV
Mean oil droplet size150 to 300 nm
SterilitySterile
Viscosity1.1 m²/s
Surface tensionSimilar to tears: 41 mN/m