Transmittance of UVB, UVA, and visible light (blue-violet) among the main Brazilian commercial opaque sunscreens

Pérès, Gabriel; Miot, Hélio Amante

doi:10.1016/j.abd.2019.01.004

Cited by 8 publications

(10 citation statements)

References 4 publications

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“…While the percentage was the same, it was not overlapped: 31% of opaque filters that blocked >99.9% of the VL did not present the same performance for UVA. 17 The present study is the first to highlight the role of VL in the melanogenesis of patients with facial melasma.…”

Section: Discussionmentioning

confidence: 66%

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Evaluation of ex vivo melanogenic response to UVB, UVA, and visible light in facial melasma and unaffected adjacent skin

Alcântara

Espósito

Olivatti

et al. 2020

Anais Brasileiros de Dermatologia

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Background The independent role of solar radiation in the differential melanogenesis between melasma and adjacent skin is unknown. Objectives To assess the melanogenic responses of skin with facial melasma and of the adjacent skin to UVB, UVA, and visible light, in an ex vivo model. Methods This was a quasi-experimental study involving 22 patients with melasma. Facial melasma and adjacent skin samples were collected and stored in DMEM medium, at room temperature. One fragment was placed under the protection from light, while another was exposed to UVB, UVA, and visible light (blue-violet component): 166 mJ/cm 2 , 1.524 J/cm 2 , and 40 J/cm 2 , respectively. Subsequently, all samples were kept for 72 hours in a dark environment and stained by Fontana-Masson to assess basal layer pigmentation, dendrites, and melanin granulation. Results Effective melanogenesis was observed in the basal layer in melasma and in the normal adjacent skin after all irradiations ( p < 0.01), with the following median increment: UVB (4.7% vs . 8.5%), UVA (9.5% vs . 9.9%), and visible light (6.8% vs . 11.7%), with no significant difference between anatomical sites. An increase in melanin granulation (coarser melanosomes) was observed only after irradiation with UVA and only in the skin with melasma ( p = 0.05). An increase in the melanocyte dendrite count induced by UVB radiation was observed in both anatomical sites ( p ≤ 0.05). Study limitations Use of an ex vivo model, with independent irradiation regimes for UVB, UVA, and visible light. Conclusions Melanogenesis induced by UVB, UVA, and visible light was observed both in melasma and in the adjacent skin. The morphological patterns suggest that different irradiations promote individualized responses on the skin with melasma.

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Section: Discussionmentioning

confidence: 66%

“…, during a traffic jam), since sunscreens do not completely block solar radiation. 17 UVB, UVA, and VL radiation measured in closed environments ( e.g ., from cell phone and computer screens, or fluorescent lamps) are negligible for the purposes of melanogenesis (data not shown).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ex vivo melanogenic response to UVB, UVA, and visible light in facial melasma and unaffected adjacent skin

Alcântara

Espósito

Olivatti

et al. 2020

Anais Brasileiros de Dermatologia

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“…This attention is necessary as the VL spectrum accounts for 40% of the incident solar energy. 5 Although this spectrum contains lower energy and contributes to tissue interaction on a much smaller scale compared with UV light, the high-energy portion (blue light) has been shown to be biologically active in the skin. Its lower energy and longer wavelength permits deeper penetration into the skin compared with UV radiation.…”

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confidence: 99%

“…Studies have shown that BL alone can cause persistent pigmentation through direct stimulation of melanocytes and This effect seems to be more pronounced and persistent in those with darker skin phenotypes. 5,6 The adoption of therapeutic applications of BL in the medical setting has been slow but is progressing. One of the earliest medical applications of BL has been in the treatment of neonatal jaundice.…”

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confidence: 99%

Effects of Blue Light on the Skin and Its Therapeutic Uses: Photodynamic Therapy and Beyond

Pieper

Lee

Swali

et al. 2022

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“…Furthermore, the biological effect of sun exposure in the skin differs individually according to melanin pigmentation, genetic predisposition (e.g., the ability to repair DNA), photosensitizing drugs, antioxidant capacity, and skin disorders that are influenced by solar radiation. [3][4][5][6]…”

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confidence: 99%

Sun exposure (UVB, UVA, and blue‐violet visible light) in ordinary daily situations

et al. 2021

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Sun exposure (UVB, UVA, and blue-violet visible light) in ordinary daily situations Dear Editor, Solar radiation is essential to human life; in addition to promoting warmth and well-being, it interacts with biological tissues causing metabolic changes, oxidative stress, and deoxyribonucleic acid (DNA) mutation. Different wavelengths elicit specific effects in the skin, such as sunburn, erythema, vitamin D synthesis, carcinogenesis, immunosuppression, photoaging, modulation of skin microbioma, and melanogenesis. 1,2The intensity of solar radiation that reaches the skin varies with altitude, latitude, the season of the year, reflective surfaces (e.g., water, grass, or snow), shadow, clothing, sunscreen use, length of exposure, and the time of day. Furthermore, the biological effect of sun exposure in the skin differs individually according to melanin pigmentation, genetic predisposition (e.g., the ability to repair DNA), photosensitizing drugs, antioxidant capacity, and skin disorders that are influenced by solar radiation. [3][4][5][6]

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Transmittance of UVB, UVA, and visible light (blue-violet) among the main Brazilian commercial opaque sunscreens

Cited by 8 publications

References 4 publications

Evaluation of ex vivo melanogenic response to UVB, UVA, and visible light in facial melasma and unaffected adjacent skin

Evaluation of ex vivo melanogenic response to UVB, UVA, and visible light in facial melasma and unaffected adjacent skin

Effects of Blue Light on the Skin and Its Therapeutic Uses: Photodynamic Therapy and Beyond

Sun exposure (UVB, UVA, and blue‐violet visible light) in ordinary daily situations

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