ROS	reactive oxygen species
HDF	human dermal fibroblast
HYAL	hyaluronidase
HAS-1	hyaluronic acid synthase 1
HAS-2	hyaluronic acid synthase 2
HAS-3	hyaluronic acid synthase 3
INVN	involucrin
OCLN	occludin
TGM	transglutaminase 1
FLG	filaggrin
AP-1	activator protein 1
MAPK	mitogen-activated protein kinase
ERK	extracellular signal-regulated kinases
JNK	c-Jun NH2-terminal kinases
HaCaT cells	human keratinocyte cell line
DMEM	Dulbecco’s modified eagle’s medium
PC/SM	penicillin/streptomycin solution
FBS	fetal bovine serum
MTT	3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide