iPSC	Induced pluripotent stem cell
HDF	Human dermal fibroblast
qPCR	Quantitative real-time polymerase chain reaction
MMP	Matrix metalloproteinase
PDGF	Platelet-derived growth factor
MAPK ECM	Mitogen-activated protein kinase Extracellular matrix
CM	Conditioned medium
TGF-β	Transforming growth factor-β
MSC	Mesenchymal stem cell
hDSPC	Human dermal stem/progenitor cell
UVB	Ultraviolet B
iPSC-CM	Induced pluripotent stem cell-derived conditioned medium
iPSC-Exo	Induced pluripotent stem cell-derived exosomes
SA- β-Gal	Senescence-associated β-galactosidase
NTA	Nanoparticle tracking analysis
TEM	Transmission electron microscopy
DLS	Dynamic light scattering
FBS	Fetal bovine serum
PBS	Phosphate buffered saline
MTT	3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
lncRNA	Long non-coding RNA