Facial skin photo‐aging and development of hyperpigmented spots from children to middle‐aged Japanese woman

Background/Purpose Facial skin hyperpigmention caused by chronic sun exposure is a major skin complaint, however, its characteristics and influential factors are still limitedly known. Methods A cross‐sectional survey in healthy Japanese women aged from 6 to 62 years (n=169) was conducted using a fa...

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Bibliographic Details
Published in:Skin research and technology 2017-11, Vol.23 (4), p.613-618
Main Authors: Takahashi, Y., Fukushima, Y., Kondo, K., Ichihashi, M.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Age
Age Distribution
Aging
Child
Children
Correlation analysis
Cross-Sectional Studies
Diet
Environment
Environmental factors
Exposure
Facial Dermatoses - ethnology
Facial Dermatoses - etiology
Female
Humans
hyperpigmentation
Hyperpigmentation - ethnology
Hyperpigmentation - etiology
Japan - ethnology
Life Style
Melanin
Middle Aged
photo‐aging
Skin
Skin Aging - ethnology
Skin Aging - physiology
Spots
Sun
Sunlight
Ultraviolet Rays
Young Adult
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Summary:Background/Purpose Facial skin hyperpigmention caused by chronic sun exposure is a major skin complaint, however, its characteristics and influential factors are still limitedly known. Methods A cross‐sectional survey in healthy Japanese women aged from 6 to 62 years (n=169) was conducted using a facial image analyzer VISIA™ for knowing onset age of hyperpigmented spot formation, its chronological changes, and influence of environmental factors. Results UV Pigmented Spot (PS) Score was positively correlated with age (R=.487, P=.000). Hyperpigmented spots appeared first around 18 years old in most subjects, and PS score remarkably increased at 20s then gradually increased by ages. The subjects with Skin Type I, one of the three grades of Japanese Skin Type (JST), whose melanin formation is genetically lower, showed higher PS score. A woman aged 31 years was subjected a weekly VISIA measurement for 2 years, and found no changes in the number, place, size and intensity of the pigment spots in this duration. Conclusion Hyperpigmented spots developed in women over 20 years of age due to chronic sun exposure without sun protection during childhood and adolescent and it was stable afterwards, whose intensity was influenced by age and skin type.
ISSN:0909-752X
1600-0846
DOI:10.1111/srt.12380