| UVR | Ultraviolet radiation |
| SCN | Suprachiasmatic nucleus |
| AQP3 | Aquaporin 3 |
| CCG | Clock-controlled gene |
| NHEK | Neonatal normal human epidermal keratinocytes |
| ZT | Zeitgeber Time |
| CSL | Camellia sinensis leaf |
| EGCG | Eigallocatechin gallate |
| NGS | New green solvent |
| KBM | Keratinocyte Basal Medium |
| qRT-PCR | Quantitative real-time PCR |
| TCA | Trichloroacetic acid |