Table 2.
Sun protection factor (SPF) of WEAOR
| Wavelength, nm | EE x I | Absorbance for WEAOR (Abs1) | Absorbance for para-amino benzoic acid (Abs2) | Abs1 x EE x I (WEAOR) | Abs2 x EE x I (para-amino benzoic acid) |
|---|---|---|---|---|---|
| 290 | 0.0150 | 0.104 | 2.272 | 0.00157 | 0.03408 |
| 295 | 0.0817 | 0.083 | 1.987 | 0.00678 | 0.16192 |
| 300 | 0.2874 | 0.073 | 1.842 | 0.02117 | 0.52958 |
| 305 | 0.3278 | 0.287 | 1.317 | 0.09407 | 0.43171 |
| 310 | 0.1864 | 0.671 | 0.820 | 0.12513 | 0.15291 |
| 315 | 0.0837 | 1.124 | 0.804 | 0.09407 | 0.06735 |
| 320 | 0.0180 | 0.023 | 0.509 | 0.00042 | 0.00916 |
| Total | 0.34323 | 1.38673 | |||
| Total x CF (10) | 3.43236 | 13.86738 | |||
| SPF values | 3.43 | 13.86 |
EE The erythemal effect spectrum, I The solar intensity spectrum, Abs The absorbance of sunscreen product, CF The correction factor (= 10)