Changes in facial moisture distribution and feelings of moisture/dryness among various environmental temperatures and humidities in summer and winter.
Skin Res Technol
; 26(6): 937-948, 2020 Nov.
Article
en En
| MEDLINE
| ID: mdl-32602641
ABSTRACT
BACKGROUND:
As environmental conditions vary depending on area of residence, consideration of environmental temperature and humidity conditions is crucial for detection of actual skin conditions in daily life. In this study, we determined changes in facial moisture and sensory evaluation distributions in various environmental temperature and humidity conditions. MATERIALS ANDMETHODS:
An original near-infrared (NIR) imaging system was used to obtain moisture distributions. Sensory evaluations of feelings of moisture/dryness were graded, and changes were compared among 10 healthy Japanese female subjects in four different environmental temperature and humidity conditions (28°C, 60% RH; 28°C, 20% RH; 15°C, 60% RH; 15°C, 20% RH) in summer and winter.RESULTS:
Skin moisture was lower at high temperatures and higher at low temperatures. Feelings of dryness on bare skin were high in low humidity. Sensitivity of feelings of moisture and dryness was high around the center of the cheekbones between side of the eyes and the mouth, but the same was not true of the moisture distribution. Moisture level was lower in winter at high temperatures, especially under the eyes near the side of the nose ridge, while the sense of dryness was not strong. These divergences between sensory evaluation and moisture level indicate the presence of a "hidden dry situation."CONCLUSION:
Changes in moisture level and sensory evaluation scores in facial skin varied among environmental conditions, which differed between summer and winter, even under the same environmental temperature and humidity.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Estaciones del Año
/
Fenómenos Fisiológicos de la Piel
/
Temperatura
/
Cara
/
Humedad
Límite:
Female
/
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
Skin Res Technol
Asunto de la revista:
DERMATOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Japón