Generally, skin properties are highly specific for each individual depending on various factors such as genetic predisposition, age, gender, body region, health and lifestyle. In this study, we measured various skin parameters on forehead, temple and cheek of 442 Caucasian women between 23 and 63 years, and evaluated differences between these facial regions and also the relationship between skin parameters and age of the volunteers. We measured transepidermal water loss (TEWL), stratum corneum hydration, skin gloss, melanin level, individual typology angle (ITA), erythema, sebum level and elasticity (R7). We observed significant negative relationship between age and TEWL, elasticity and skin lightness represented by ITA. Sebum, melanin and erythema levels increased up to the age of 50, when menopause usually takes place, and then decreased again. Evaluating the skin parameters on the forehead, temple and cheek area, we observed the biggest differences between the cheek and the forehead. The cheek possessed the worst skin parameters, such as the highest TEWL and erythema values and the lowest hydration.
- MeSH
- běloši MeSH
- dospělí MeSH
- epidermis metabolismus MeSH
- erytém epidemiologie MeSH
- fyziologie kůže * MeSH
- lidé středního věku MeSH
- lidé MeSH
- obličej * MeSH
- perspiratio insensibilis MeSH
- pružnost MeSH
- sebum metabolismus MeSH
- věkové faktory MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Spectrophotometric analysis of human pigmentation characteristics plays an important role in medicine and cosmetology. However, to correctly interpret the results, one must know the normal range of variability of pigmentation and erythema in the population. This is of utmost importance for quantitative assessment of melanocytic nevi, hemangiomas, and allergic reactions. The objective of the present work was to determine the physiological range of variability of skin and hair pigmentation and of erythema in Polish prepubertal children. The study encompassed Polish children aged 7 to 10 years without any abnormalities in skin or hair pigmentation. A total of 802 children were examined. Constitutive skin and hair pigmentation and skin erythema were evaluated using a dermaspectrometer. The LMS method (Cole 1990, Pan, Cole 2004) was used for the construction of percentile charts presenting the distribution of skin melanin index (SMI), hair melanin index (HMI), and erythema index (EI) values in the various age and sex groups. The presented normal ranges of variability of SMI, HMI, and EI are the first Polish reference standards for these indices. The manner in which the data are presented makes it possible to graphically assess these characteristics (percentile charts) as well as to conduct their normalization using L, M, and S parameters. The normalized values may also be converted to percentiles. Standards may be used in clinical practice, e.g., for evaluating pigmentation abnormalities and skin reactions to inflammations, irritations, and allergies. Furthermore, they may be applied in designing dermatological and pharmacological research.
- MeSH
- barva vlasů MeSH
- biologická variabilita populace MeSH
- dítě MeSH
- erytém * epidemiologie MeSH
- lidé MeSH
- melaniny * analýza MeSH
- pigmentace kůže MeSH
- spektrofotometrie metody MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Geografické názvy
- Polsko MeSH
- MeSH
- erytém epidemiologie MeSH
- lidé MeSH
- roztoči patogenita MeSH
- zdroje nemoci MeSH
- Check Tag
- lidé MeSH
