Evaluation of the impact of urban pollution on the quality of skin: a multicentre study in Mexico

Lefebvre, Marc-André; Pham, D.-M.; Boussouira, Boudiaf; Bernard, Dominique; Camus, Claire; Nguyen, Quoc‐Duy

doi:10.1111/ics.12203

Cited by 78 publications

(93 citation statements)

References 43 publications

(54 reference statements)

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“…If and how this is indeed the case cannot be answered by the present study. It should be noted, however, that living in heavily polluted metropolitan areas was previously reported to be associated with increased production of sebum, which is a known pathogenic factor for acne vulgaris [8]. Also, biochemical analysis revealed qualitative changes in sebum in individuals living in polluted cities [8].…”

Section: Discussionmentioning

confidence: 99%

“…In this regard, it is of interest that: (i) greasy skin was reported to be more frequent in individuals living in a Chinese metropolitan area as compared with a nonpolluted area [7], (ii) in subsequent studies sebum levels were indeed found to be increased in individuals living in major cities with high pollution levels [8], and (iii) the sebum of these individuals was qualitatively altered [8]. Overall, these studies indicate the possibility that air pollution may contribute to the aggravation of acne vulgaris.…”

Section: Introductionmentioning

confidence: 99%

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A Time-Series Study of the Effect of Air Pollution on Outpatient Visits for Acne Vulgaris in Beijing

Liu

Pan²,

Vierkötter³

et al. 2018

Skin Pharmacol Physiol

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Background/Aims: There is increasing evidence that exposure to air pollutants, including particulate matter (PM_2.5, PM₁₀), nitrogen dioxide (NO₂), and sulfur dioxide (SO₂), might aggravate preexisting skin diseases such as eczema and urticaria. Here we investigated if a possible link exists between air pollution and acne vulgaris. We assessed the association between ambient air pollutant concentrations and the number of visits of patients for acne vulgaris to a dermatological outpatient clinic in Beijing, China, from April 1, 2012 to April 30, 2014. Methods: In this time period, 59,325 outpatient visits were recorded because of acne vulgaris. Daily air pollution parameters for PM₁₀, PM_2.5, SO₂, and NO₂ were obtained from the Beijing Municipal Environmental Monitoring Center. Results: Increased concentrations of ambient PM_2.5, PM₁₀, and NO₂ were significantly associated with increased numbers of outpatient visits for acne vulgaris over the 2 years. These effects could be observed for NO₂ in a single-pollutant model and for PM_2.5, PM₁₀, and NO₂ in 2-pollutant models, which are closer to real-life exposure. Of note, these effects were specific because they were not observed for increased SO₂ concentrations, which even showed negative correlations in all test models. Conclusion: This study provides indirect evidence for a link between acne vulgaris and air pollution.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Time-Series Study of the Effect of Air Pollution on Outpatient Visits for Acne Vulgaris in Beijing

Liu

Pan²,

Vierkötter³

et al. 2018

Skin Pharmacol Physiol

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“…After exposure to pollution, the skin is characterized with increased pH and lactic acid content. These are only a few examples which, if properly monitored, could be regarded as chemical markers to determine anti-pollution efficacy [14].…”

Section: Effect Of Pollutants On the Skin And Its Mechanism Of Actionmentioning

confidence: 99%

The Impact of Pollution on Skin and Proper Efficacy Testing for Anti-Pollution Claims

et al. 2018

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Exposure to pollution can cause oxidative stress, premature ageing, inflammation, and diseases. Since most of us are exposed to pollution, protection is important. This can be achieved through skin protection or through protection with respect to food and food supplements. There is a wide range of products on the market with anti-pollution claims. However, it is important that these claims are thoroughly validated by proper efficacy testing. When skin cells are exposed to pollution factors, changes in a number of skin properties can be observed, such as lipid composition, lipid and protein oxidation, pH, sebum secretion rate, oxidative stress, inflammation markers, and collagen and elastin levels. These can be measured and used as markers to verify anti-pollution claims. In the present review, we summarize some of the most important in vitro and in vivo tests that are used to determine if an ingredient or formulation has anti-pollution efficacy.

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“…In vitro tests are based on the use of cell cultures or reconstituted skin models and evaluate several biomarkers (PGE2, IL-1α, MDA, superoxide dismutase, catalase, gluthathione reductase, to name just a few) after pollutants exposure [27,28]. In vivo tests, performed on volunteers' panels, include instrumental evaluation of skin parameters (such as skin hydration, transepidermal water loss or TEWL, skin elasticity, wrinkles, skin pigmentation) and the evaluation of the levels of oxidative stress and inflammatory markers after exposure to pollutant stressors [29,30]. The availability of reliable and specific markers of airborne pollution upon skin would allow to evaluate and quantify the cutaneous impact of this phenomenon, as well as to assess the effectiveness of ingredients or finished products in counteracting detrimental effects of air pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, an increase in soot (per 0.5 × 10 −5 per m) and particles from traffic (per 475 kg per year and square km) were associated with 20% more pigment spots on forehead and cheeks [29]. The influence of air pollutants on a number of skin parameters was evaluated in a clinical comparative study conducted on 96 subjects in Mexico City (one of the world's most polluted cities) and 93 subjects in Cuernavaca, considered a town preserved from urban pollution [30]. In this comparative study, the Authors studied quantitative and qualitative modifications of a number of skin parameters.…”

Section: Introductionmentioning

confidence: 99%

Cosmetic Functional Ingredients from Botanical Sources for Anti-Pollution Skincare Products

Juliano

Magrini

2018

Cosmetics

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Air pollution is a rising problem in many metropolitan areas around the world. Airborne contaminants are predominantly derived from anthropogenic activities, and include carbon monoxide, sulfur dioxide, nitrogen oxides, volatile organic compounds, ozone and particulate matter (PM; a mixture of solid and liquid particles of variable size and composition, able to absorb and delivery a large number of pollutants). The exposure to these air pollutants is associated to detrimental effects on human skin, such as premature aging, pigment spot formation, skin rashes and eczema, and can worsen some skin conditions, such as atopic dermatitis. A cosmetic approach to this problem involves the topical application of skincare products containing functional ingredients able to counteract pollution-induced skin damage. Considering that the demand for natural actives is growing in all segments of global cosmetic market, the aim of this review is to describe some commercial cosmetic ingredients obtained from botanical sources able to reduce the impact of air pollutants on human skin with different mechanisms, providing a scientific rationale for their use.

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Evaluation of the impact of urban pollution on the quality of skin: a multicentre study in Mexico

Cited by 78 publications

References 43 publications

A Time-Series Study of the Effect of Air Pollution on Outpatient Visits for Acne Vulgaris in Beijing

A Time-Series Study of the Effect of Air Pollution on Outpatient Visits for Acne Vulgaris in Beijing

The Impact of Pollution on Skin and Proper Efficacy Testing for Anti-Pollution Claims

Cosmetic Functional Ingredients from Botanical Sources for Anti-Pollution Skincare Products

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