| 18-MEA | 18-methyl eicosanoic acid |
| Dct | dopachrome tautomerase |
| DHI | 5,6-dihydroxyindole |
| DHICA | 5,6-dihydroxyindole-2-carboxyl acid |
| HUPF | hair ultraviolet protection factor |
| MALDI MS | Matrix Assisted Laser Desorption Ionization Mass Spectrometry |
| PVA | Polyvinyl alcohol |
| Tyrp2 | tyrosinase-related protein-2 |
| UV-A | UltraViolet-A |