| N | number |
| W | women |
| M | men |
| T | topical cream |
| O | oral capsules |
| H. pluvialis | Haematococcus pluvialis |
| R.T. | Room Temperature |
| R.H. | Relative Humidity |
| UV | ultraviolet |
| LOC | left outer canthus |
| ROC | right outer canthus |
| LC | left cheek |
| RC | right cheek |
| N/A | null/anonymous |
| D | Dimensionless |
| TEWL | transepidermal water loss |
| 8-OHdG | 8-hydroxy-2-deoxyguanosine |
| MMP | Matrix metalloproteinase |
| MMP-1 | collagenase |
| MMP-12 | elastase |
| mRNA | massager ribonucleic acid |
| IL-1α | interleukin-1α |
| MED | minimal erythema dose |
| 1.15 MED | 1.15 times the amount of UV rays of MED |
| MDA | malondialdehyde |
| CRP | C-Reactive protein |
| RSSC samples | they are collected from surface of facial skin (the sides of the nose) by using polyester swabs |
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