| UVA | Ultraviolet A |
| UVB | Ultraviolet B |
| SC | Stratum Corneum |
| ECM | Extracellular Matrix |
| NMF | Natural Moisturizing Factor |
| TEWL | Transepidermal Water Loss |
| MMP | Matrix Metalloproteinases |
| kDa | KiloDalton |
| HC | Hydrolyzed Collagen |
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