RESULTS
redness
SKIN, SKIN REDNESS
According to the indoor environment exposure time in winter (temperature, 25 ± 1°C; humidity < 20%), the results of skin parameters (temperature, moisture, sebum, TEWL, elasticity, wrinkles, pores, texture, and redness) are shown in Figure Comparison of skin parameters of the treated and nontreated site on the face before and after 1 and 6 h of exposure to an indoor environment in winter. (A) skin temperature, (B) hydration, (C) TEWL, (D) sebum, (E) elasticity, (F) pore, (G) roughness, (H) redness, and (I) wrinkles were evaluated. *The skin temperature of the nontreated site gradually increased by 0.54% and 0.73% after exposure for 1 h (Regarding hydration and TEWL, compared to the baseline, there was no significant difference between the treated and nontreated sites after 6 h of exposure (Figures Comparison of skin parameters of the treated and nontreated site on the forearm before and after 1 and 6 h of exposure to the indoor environment in winter: (A) hydration and (B) TEWL. *Rate of change of skin parameters after 1 and 6 h of exposure compared to baseline in treated and nontreated areas; (A) temperature, (B) hydration on the cheek, (C) TEWL on the cheek (D) hydration on the forearm, (e) TEWL on the forearm, (F) sebum, (G) elasticity, (H) pore, (I) roughness, (J) redness, (K) wrinkle were evaluated. Sebum at both sites significantly increased after 1 and 6 h of exposure (The skin elasticity of the treated site significantly increased by 2.61% when exposed for 1 h (The skin pore of the nontreated site significantly increased by 29.45% and 36.12% when exposed for 1 and 6 h, respectively (The skin roughness of the nontreated site significantly increased by 7.06% and 7.38% when exposed for 1 and 6 h, respectively (Skin redness at both sites increased significantly after 1 h (Skin wrinkles at nontreated sites significantly increased by 3.67% and 5.84% when exposed for 1 h (Table Correlation of skin parameters after 6 h of exposure to an indoor environment in winter.The correlation is significant at the 0.05 level (2‐tailed).Correlation is significant at the 0.01 level (2‐tailed).