Table 3.
Anti-ageing eye serum physicochemical properties.
| Parameter | Unit | Results | |
|---|---|---|---|
| Initial | After 30 Days | ||
| Viscosity at 20 °C (Brookfield DV-III Ultra) |
mPa·s | 6.43 ± 0.07 | 7.47 ± 0.08 |
| Density at 20 °C (PB-155 ed. I of 02.05.2012) |
g/cm3 | 1.016 ± 0.003 | 1.015 ± 0.003 |
| Organoleptic testing (ISO 6658:2005 p. 5.4.2) |
|||
| Appearance | W/O mixture * | Liquid ** | |
| Color | Beige | Light yellow | |
| Odor | Specific of cosmetic ingredients | Characteristic of ingredients | |
| Consistency | Liquid | Liquid | |
| pH (PB-234 ed. I of 03.10.2013r.) |
5.5 ± 0.2 | 5.6 ± 0.2 | |
* W/O—water in oil; **—without mechanical impurities.