Topography and anisotropy of the skin surface with ageing

Lagarde, Jean‐Michel; Rouvrais, C.; Black, David R.

doi:10.1111/j.1600-0846.2005.00096.x

Cited by 78 publications

(80 citation statements)

References 5 publications

(3 reference statements)

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“…These results are in general agreement with previous observations which involved the anatomical site at the eye corner [4] and 2 sites, forearm and back of hand [5] or forearm and temple, in 2 age groups [3]. A study differentiating only between young and aged adults but including numerous sites (lower leg and thigh, abdomen, lower and upper back, dorsal, volar forearm and upper arm, and periorbital area) concluded that the age effect on roughness is dependent on site, although some confounding between intrinsic aging and photoaging occurred [8].…”

Section: Resultssupporting

confidence: 83%

“…Skin micro-relief and wrinkles are manifestations of different etiology which in combination produce the overall skin roughness [1,2]. Roughness was found to be greater in aged compared to young skin at different anatomical sites including volar forearm, back of the hand, periorbital area, and temple [3,4,5,6], while results were conflicting for the lower leg [7]. Roughness was reported to vary significantly between different sites, being largest in the posterior neck and smallest in the upper back and lower leg, while only minor differences between genders and races were shown [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…Although fast and convenient direct methods that are appropriate for the clinical setting have been developed based on interference fringe profilometry and the use of CCD cameras [26,27,28], the preparation of replicas remains the most frequently used technique with a vast body of data available [3,4,5,8,10,12,13,17,18,29,30,31]. The advantages of the replica technique are simple and rapid sample preparation, reproducibility and precision, and the possibility to store the replica for repeated measurements [24,25].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Skin Surface Topography and Texture Analysis of Sun-Exposed Body Sites in View of Sunscreen Application

Korn

Surber²,

Imanidis

2016

Skin Pharmacol Physiol

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Background/Aims: To determine the roughness of the surface of human skin at highly sun-exposed anatomical sites in a wide age range in order to derive consequences for sunscreen application. Methods: The forehead, cheek, nose, shoulder, and dorsal hand of 4 age groups (0-9, 20-39, 40-59, and >60 years) were investigated by replica formation, and areal topography was determined by confocal chromatic imaging. The arithmetic mean height as a roughness parameter and the void volume of the surface profile were calculated. Results: Age and site had a significant effect on roughness. Both the dorsal hand and nose exhibited the greatest roughness over the age of 40, and the forehead of the youngest age group exhibited the smallest roughness. Differentiation between sites progressed with age, whereas roughness increased significantly with age for the dorsal hand and nose but not for the other sites. The void volume was smaller than the volume corresponding to the typically recommended amount of sunscreen application except for the cases of largest roughness. Conclusions: Different site-age combinations show significant variation of skin surface roughness. The application of sunscreen may in some instances need to be adjusted to take into account the increased roughness of highly sun-exposed anatomical sites.

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Skin Surface Topography and Texture Analysis of Sun-Exposed Body Sites in View of Sunscreen Application

Korn

Surber²,

Imanidis

2016

Skin Pharmacol Physiol

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“…A polyurethane-coated polyamide microfibre fleece (Lorica soft Ò , Lorica Sud, Milan, Italy) showing a surface topography and roughness similar to that of human skin ( Table 2) was chosen as a model substrate [15,22,29,30]. Pump vapouriser bottles (Type 215-6274, VWR, Dietikon, Switzerland) were used to manually spray the lipid mixtures onto the substrates, as described in detail in [31].…”

Section: Skin Model Substrate and Film Preparationmentioning

confidence: 99%

Fabrication, Characterisation and Tribological Investigation of Artificial Skin Surface Lipid Films

et al. 2009

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This article deals with the tribology of lipid coatings that resemble those found on human skin. In order to simulate the lipidic surface chemistry of human skin, an artificial sebum formulation that closely resembles human sebum was spray-coated onto mechanical skin models in physiologically relevant concentrations (5-100 lg/cm 2 ). Water contact angles and surface free energies (SFEs) showed that model surfaces with B25 lg/cm 2 lipids appropriately mimic the physico-chemical properties of dry, sebum-poor skin regions. In friction experiments with a steel ball, lipid-coated model surfaces demonstrated lubrication effects over a wide range of sliding velocities and normal loads. In friction measurements on model surfaces as a function of lipid-film thickness, a clear minimum in the friction coefficient (COF) was observed in the case of hydrophilic, high-SFE materials (steel, glass), with the lowest COF (&0.5) against skin model surfaces being found at 25 lg/cm 2 lipids. For hydrophobic, low-SFE polymers, the COF was considerably lower (0.4 for PP, 0.16 for PTFE) and relatively independent of the lipid amount, indicating that both the mechanical and surface-chemical properties of the sliders strongly influence the friction behaviour of the skin-model surfaces. Lipid-coated skin models might be a valuable tool not only for tribologists but also for cosmetic chemists, in that they allow the objective study of friction, adhesion and wetting behaviour of liquids and emulsions on simulated skinsurface conditions.

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“…The most used techniques for measuring skin surface topography was the skin surface replicas analysis [3]. Although the replica analysis had advantages, they had many disadvantages which limit these methods for skin assessment.…”

Section: Introductionmentioning

confidence: 99%

Age Estimation Based on Skin Surface Images

He¹,

Li²,

Jiang³

et al. 2017

Proceedings of the 2nd International Conference on Biomedical and Biological Engineering 2017 (BBE 2017)

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Abstract. This paper presents a model of detection age which quantifies the appearance changes of human skin at different stages of aging without traditional skeleton. We provide a novel method to extract age-related primitive features from skin surface images obtained by a digital camera, including skin surface heterogeneity parameters of the standard deviation of gray (Std) and the information entropy (Entropy) of skin images, the skin surface texture variations parameters of the mean area of the grids (MA) and the number of intersections (NI). Skin surface images of 97 individuals have been analyzed by our image processing program. The results show that the four parameters were statistically correlated with age, indicating their potential for the routine evaluation of skin aging.

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Topography and anisotropy of the skin surface with ageing

Abstract: The study of these new parameters will allow objective evaluation of the action of topical dermatological and cosmetic treatment, and new techniques in plastic surgery (e.g. laser resurfacing), and will enable the accurate follow-up of certain pathologies.

Cited by 78 publications

References 5 publications

Skin Surface Topography and Texture Analysis of Sun-Exposed Body Sites in View of Sunscreen Application

Skin Surface Topography and Texture Analysis of Sun-Exposed Body Sites in View of Sunscreen Application

Fabrication, Characterisation and Tribological Investigation of Artificial Skin Surface Lipid Films

Age Estimation Based on Skin Surface Images

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