AVEN	Apoptosis and caspase activation inhibitor
CBX4	Chromobox 4
CH3	Methyl group
circRNA	CircularRNA
CpG	Cytosine–phosphate–guanine
DNA	Deoxyribonucleic acid
DNMT	DNA methyltransferase
ECM	Extracellular matrix
EED	Embryonic ectoderm development
ELF5	E74-like ETS transcription factor 5
EMD	Emerin
EV	Extracellular vesicle
EZH1/2	Enhancer of zeste homolog 1/2
FB	Fibroblast
GADD45A	DNA-damage-inducible protein 45 alpha
H2A	Histone 2A
H2AK119Ub	Histone 2A lysine 119 ubiquitination
H2B	Histone 2B
H3	Histone H3
H3K27me3	Histone 3 lysine 27 trimethylation
H3K36	Histone 3 lysine 36
H3K4	Histone 3 lysine 4
H3K4me3	Trimethylation of histone H3 lysine 4
H3K79	Histone 3 lysine 79
H3K9me3	Histone 3 lysine 9 trimethylation
H4	Histone H4
H4K20	Histone 4 lysine 20
HAS2	Hyaluronan synthase 2
HATs	Histone acetyltransferases
HDACs	Histone deacetylases
HFs	Hair follicles
HFSCs	Hair follicle stem cells
HP1	Heterochromatin protein 1
ISGs	Interferon-stimulated genes
JARID2	Jumonji and AT-rich interaction domain containing 2
KDM6B	Lysine demethylase 6B
LCE3D	Late cornified envelope 3D
lncRNA	Long non-coding RNA
LOX	Lysyl oxidase
MAFF	MAF bZIP transcription factor F
MBDs	Methyl-CpG-binding domain proteins
meDIP	Methylated DNA immunoprecipitation
miRNAs	MicroRNAs
mRNA	Messenger RNA
ncRNA	Non-coding RNA
p300	Histone acetyltransferase p300
PcG	Polycomb group
PIASy	Protein inhibitor of activated STAT Y
POU2F3	POU class 2 homeobox 3
PRC	Polycomb repressive complex
QPCR	MeDIP-coupled quantitative PCR
RB	Retinoblastoma protein
RNA	Ribonucleic acid
ROCK1	Rho-associated coiled-coil containing protein kinase 1
S100P	S100 calcium binding protein P
SAHF	Senescence-associated heterochromatin foci
SAM	S-adenosylmethionine
SASP	Senescence-associated secretory phenotype
SCs	Stem cells
SP1	Specificity protein 1
SUMO	Small ubiquitin-like modifier
SUZ12	Suppressor of zeste 12
TACs	Transit-amplifying cells
TET	Ten-eleven translocation methylcytosine dioxygenases
TEWL	Trans-epidermal water loss
TLRs	Toll-like receptors
UBC9	Ubiquitin-conjugating enzyme 9
UHRF1	Ubiquitin-like with PHD and ring finger domains 1
UPS	Ubiquitin–proteasome System
UV	Ultraviolet