The effects of continuous application of sunscreen on photoaged skin in Japanese elderly people—the relationship with the usage

Mizuno, Makoto; Kunimoto, Kayo; Seigan, Mikiko; Naru, Eiji; Kameyama, Koichi; Furukawa, Fukumi; Yamamoto, Yuki

doi:10.1016/j.jdermsci.2016.08.509

Cited by 8 publications

(14 citation statements)

References 40 publications

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“…Mexameter results demonstrated the increase in pigmentation and skin erythema associated with sunlight exposure, which was resisted by sunscreen. Findings of this experiment are comparable with the previous long-term study using different approach, where the application of sunscreen did not worsen the skin tone uniformity (34). Another study supports our findings, where scoring method was adopted and more pigmentation was recorded in unprotected group as compared to the photoprotected group (35).…”

Section: Discussionsupporting

confidence: 90%

“…Significant reduction in skin hydration was recorded in sun‐exposed skin, and sunscreen was proved to be effective against the loss in skin moisture content. Similar study was performed on Japanese people for longer duration where skin hydration increases after the application of sunscreen, but the results were not compared with any control group . Solar radiations reduce moisture content in the skin and drive the skin toward dryness .…”

Section: Discussionmentioning

confidence: 99%

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Photodamage and Photoprotection: An In vivo Approach Using Noninvasive Probes

Nawaz

Khan

Akhtar

et al. 2019

Photochem & Photobiology

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Solar radiations trigger the physiological alteration in skin which progress toward photoaging. Sunscreens are known to be effective against the photodamaging effects of sunlight. The purpose of this study was to evaluate the extent to which aging signs caused by real‐life sunlight exposure could be avoided by comparing various parameters between sun‐exposed and sun‐protected skin using noninvasive probes. Female volunteers (n = 11) after getting their consent were provided with marketed sunscreen product to apply onto their skin for 6 months. Measurements were scheduled every 15 days from the baseline reading for 6 months. Cutometer, Mexameter and Corneometer were used for evaluation of facial skin parameters. Clinical evaluations showed the effects of sunlight exposure on different skin parameters by comparing sun‐protected and unprotected skin, where Gross elasticity (R2), Net elasticity (R5), Viscoelasticity (R6) and Biological elasticity (R7) showed insignificant results, while Hydration, Melanin and Erythema showed significant results. Sun‐exposed skin presented 0.72%, 0.66%, 0.77%, 1.39%, 1.99%, 2.01% and 3.15% changes in R2, R5, R6 and R7, melanin, erythema and hydration, respectively, which were potentially prevented by sunscreen application. Premature aging is inhibited by following photoprotective regimen on routine basis, emphasizing the potential benefit of sunscreen against early aging signs.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Photodamage and Photoprotection: An In vivo Approach Using Noninvasive Probes

Nawaz

Khan

Akhtar

et al. 2019

Photochem & Photobiology

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“…[12][13][14][15][16] Among these factors, solar radiations were identified as key aggressors aggravating Japanese facial skin signs. [17][18][19][20][21][22] The comparison of two cities, the northerner Akita (39.43°N, 140.07°E) and the southerner Kagoshima (31.34°N, 130.33°E), has showed an acceleration in the severities of Pigmentation signs since 20 years and of Wrinkles/Texture after 30 years. 23 Accordingly, an early signs apparition was observed, estimated at 8 years for Wrinkles/Texture and at 16 years for Pigmentation.…”

Section: Introductionmentioning

confidence: 99%

Japanese experiment of a complete and objective automatic grading system of facial signs from selfie pictures: Validation with dermatologists and characterization of changes due to age and sun exposures

Flament

Velleman²,

Yamashita³

et al. 2020

Skin Research and Technology

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Objective: To evaluate the capacity of the automatic detection system to accurately grade, from smartphones' selfie pictures, the severity of ten facial signs in Japanese women and their changes due to age and sun exposures.Methods: A three-step approach was conducted, based on self-taken selfie images.At first, to check on 310 Japanese women (18-69 years) enrolled in the northerner Hokkaido area (latitude 43.2°N), how, on ten facial signs, the A.I-based automatic grading system may correlate with dermatological assessments, taken as reference.Second, to assess and compare age changes in 310 Japanese and 112 Korean women.Third, as these Japanese panelists were recruited according to their usual behavior toward sun exposure, that is, non-sun-phobic (NSP, N = 114) and sun-phobic (SP, N = 196), and through their regular and early use of a photo-protective product, to characterize the facial photo-damages.Results: (a) On the ten facial signs, detected automatically, nine were found significantly (P < .0001) highly correlated with the evaluations made by three Japanese dermatologists (Wrinkles: r = .75; Sagging: r = .80; Pigmentation: r = .75). (b) The automatic scores showed significant changes with age, by decade, of Wrinkles/ Texture, Pigmentation, and Ptosis/Sagging (P < .05). (c) After 45 years, a significantly increased severity of Wrinkles/Texture and Pigmentation was observed in NSP vs. SP women (P < .05). A trend of an increased Ptosis/Sagging (P = .09) was observed. Conclusion:This work illustrates, for the first time through investigations conducted at home, some impacts of aging and sun exposures on facial signs of Japanese women.Results significantly confirm the importance of sun avoidance coupled with photoprotective measures. In epidemiological studies, the AI-based system offers a fast, | 545 FLAMENT ET AL. How to cite this article: Flament F, Velleman D, Yamashita E, et al. Japanese experiment of a complete and objective automatic grading system of facial signs from selfie pictures: Validation with dermatologists and characterization of changes due to age and sun exposures. Skin Res Technol.

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“…In the latter, pigmentary disorders (dyschromia) are however of a much lower incidence. These results drove us to extend such approach to 1011 Japanese women (aged 18-83 years) since the related literature on UV exposure(s) and lifestyle's impact on Japanese facial skin ageing is scarce [13][14][15][16]. A similar protocol was adopted, using the same differentiation (i.e.…”

Section: Introductionmentioning

confidence: 99%

Clinical impacts of sun exposures on the faces and hands of Japanese women of different ages

Flament

Velleman²,

Yamamoto³

et al. 2019

Intern J of Cosmetic Sci

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Objective To assess the impacts of sun exposures on some skin signs on the faces and hands of differently aged Japanese women, according to their distinct behaviours towards vis à vis sun exposure. Methods Two comparable cohorts of Japanese women (aged 18–83 years) were created according to their usual behaviour towards sun exposure i.e. non‐sun‐phobic (N = 495) and sun‐phobic (N = 516) and through their regular use(s) of a photo‐protective product. Standard photographs (full‐face and 45° lateral) allowed to focus on 18 facial signs that were graded by 15 experts, using a referential skin ageing Atlas. From these two cohorts, two sub‐cohorts (114 and 122 women) were created with regard to the similar clinical aspects of the dorsal side of their hands (Left vs. Right) that were further graded. Absolute differences in the scores of each sign were used (non‐sun‐phobic minus sun‐phobic), by age‐ranges, to better ascertain the impact of sun exposures and photo‐protection. Results Facial signs related to skin wrinkles/texture and pigmentary spots were found significantly more accentuated among non‐sun‐phobic women and show an early onset (20–30 years). Facial sagging and crow’s feet wrinkles appear delayed (30–40 years). The severity of vascular disorders was found to be similar in the two cohorts. The absolute differences in the grading’s of almost all signs were unsurprisingly found increased with advancing ages, illustrating the combination of chronological and photo‐ageing processes. With regard to hands, differences in skin texture and pigmentary disorders are of a late onset (40–50 years) and were found much increased at older ages. The cutaneous signs of the hands of Japanese women can hardly be taken as reliable markers of their photo‐ageing status. Conclusion The present work illustrates, for the first time, some specificities of the impact of sun exposures on the facial skin of Japanese women, pinpointing the fact that some facial signs are of an early onset. Results significantly confirm the importance of both sun avoidance coupled with photo‐protective measures.

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The effects of continuous application of sunscreen on photoaged skin in Japanese elderly people—the relationship with the usage

Cited by 8 publications

References 40 publications

Photodamage and Photoprotection: An In vivo Approach Using Noninvasive Probes

Photodamage and Photoprotection: An In vivo Approach Using Noninvasive Probes

Japanese experiment of a complete and objective automatic grading system of facial signs from selfie pictures: Validation with dermatologists and characterization of changes due to age and sun exposures

Clinical impacts of sun exposures on the faces and hands of Japanese women of different ages

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