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Skin Research and Technology

M G A Leite, P M B G Maia Campos
BACKGROUND/PURPOSE: Hair straighteners are very popular around the world, although they can cause great damage to the hair. Thus, the characterization of the mechanical properties of curly hair using advanced techniques is very important to clarify how hair straighteners act on hair fibers and to contribute to the development of effective products. On this basis, we chose two nonconventional hair straighteners (formaldehyde and glyoxylic acid) to investigate how hair straightening treatments affect the mechanical properties of curly hair...
March 21, 2017: Skin Research and Technology
G Odorici, V D Mandel, A Giannetti, G Pellacani, A Conti
No abstract text is available yet for this article.
March 19, 2017: Skin Research and Technology
Y S Jung, J M Bae, B J Kim, J-S Kang, S B Cho
BACKGROUND: Studies have shown melasma lesions to be distributed across the face in centrofacial, malar, and mandibular patterns. Meanwhile, however, melasma lesions of the periorbital area have yet to be thoroughly described. METHODS: We analyzed normal and ultraviolet light-exposed photographs of patients with melasma. The periorbital melasma lesions were measured according to anatomical reference points and a hierarchical cluster analysis was performed. RESULTS: The periorbital melasma lesions showed clinical features of fine and homogenous melasma pigmentation, involving both the upper and lower eyelids that extended to other anatomical sites with a darker and coarser appearance...
March 19, 2017: Skin Research and Technology
M O Visscher, S A Burkes, D M Adams, A M Hammill, R R Wickett
BACKGROUND: Newborn infant skin changes after birth but studies have focused on the epidermal barrier. Dermal properties are relevant for care, but literature on postnatal changes is sparse. We further characterized skin maturational changes in lightness, color and response to biomechanical stress. METHODS: Normal skin sites from subsets of participants in a trial on the progression and stage of infantile hemangiomas were retrospectively examined. Standardized photographs were analyzed as L*, a*, and b* images...
March 16, 2017: Skin Research and Technology
J Kitsongsermthon, K Duangweang, J Kreepoke, A Tansirikongkol
BACKGROUND/PURPOSE: The plastic microbeads, used in many cleansers, will be banned in cosmetic and personal care products within 2017 since they are non-degradable and can disturb the living organisms in water reservoirs. Various choices of biodegradable beads are commercially available, but their efficacy has not been proven yet. This study aimed to compare the cleansing efficacy in dirt and sebum removal aspects of three types of exfoliating beads. METHODS: The gel scrubs with polyethylene (PE) beads, mannan beads or wax beads, were formulated and evaluated for their stability...
March 16, 2017: Skin Research and Technology
K Ogai, M Matsumoto, M Aoki, R Ota, K Hashimoto, R Wada, M Kobayashi, J Sugama
BACKGROUND/PURPOSE: Presently, skin-cleaning agents that claim to be removed by water or wiping alone are commercially available and have been used for the purpose of bed baths. However, there is a lack of knowledge on how water washing and wiping differently affect skin physiological functions or ceramide content. The aim of this study was to compare the effects of water washing and wiping on skin physiological functions and ceramide content. METHODS: Three kinds of the cleaning agents with different removal techniques (ie, water washing and wiping) were used in this study...
March 14, 2017: Skin Research and Technology
J Murata, S Murata, M Soma, H Nakae, Y Sato, H Kogo, N Umeki
PURPOSE: We hypothesized that skin blood flow (SBF) of fingers are modulated during concentrated finger perception and that the changes in SBF reflect fluctuations in finger volume (FV). The aim of this study, therefore, was examine the relationship between the changes in SBF and FV during Braille reading. METHODS: We measured SBF of the finger, cutaneous vascular conductance (CVC), FV, and arterial blood pressure during Braille reading performed under blind conditions in thirty healthy subjects...
March 14, 2017: Skin Research and Technology
M Saadatmand, K J Stone, V N Vega, S Felter, S Ventura, G Kasting, J Jaworska
BACKGROUND: Experimental work on skin hydration is technologically challenging, and mostly limited to observations where environmental conditions are constant. In some cases, like diapered baby skin, such work is practically unfeasible, yet it is important to understand potential effects of diapering on skin condition. To overcome this challenge, in part, we developed a computer simulation model of reversible transient skin hydration effects. METHODS: Skin hydration model by Li et al...
March 13, 2017: Skin Research and Technology
L Coderch, M A Oliver, V Martínez, A M Manich, L Rubio, M Martí
PURPOSE: The aim of this study was to characterize the external and internal lipids of Caucasian hair and their influence in different hair properties such as moisture content, hydrophobic character, and mechanical properties. METHODS: Lipid extraction and their analysis by thin layer chromatography with flame ionization detector were carried out. Lipid rearrangement and water sorption and desorption evaluation of these fibers with and without lipids will also be determined using different techniques such as differential scanning calorimetry, thermogravimetric analysis and dynamic vapor sorption, mainly to evaluate permeation changes of these hair fibers possibly related to the fluidity of the lipids extracted...
March 13, 2017: Skin Research and Technology
S Springer, M Zieger, A Böttcher, J Lademann, M Kaatz
BACKGROUND: The multiphoton tomography (MPT) has evolved into a useful tool for the non-invasive investigation of morphological and biophysical characteristics of human skin in vivo. Until now, changes of the skin have been evaluated mainly by using clinical and histological techniques. In this study, the progress of wound healing was investigated by MPT over 3 weeks with a final examination after 24 months. Especially, the collagen degradation, reepithelization and tissue formation were examined...
March 7, 2017: Skin Research and Technology
Z Tyack, M Simons, R M Kimble, M J Muller, K Leung
BACKGROUND: This study aimed to determine the reproducibility and clinical utility of a 3D camera for measuring burn scar height in adults. METHODS: Participants from a larger prospective longitudinal study were included. Reproducibility data were collected using an immediate test-retest interval and a 1-2 week test-retest interval and included reliability and agreement. The LifeViz(™) 3D camera was used to measure scar height. Reproducibility was tested using the Intraclass Correlation Coefficient (ICC), percentage agreement within 1 mm between test and retest, standard error of measurement, smallest detectable change (SDC) and Bland Altman limits of agreement...
March 7, 2017: Skin Research and Technology
H N Mayrovitz, S A Mahtani, E Pitts, L Michaelos
BACKGROUND/PURPOSE: We hypothesized that reported race-related differences in skin properties cause skin and skin-to-fat water differences among races that are measureable by skin tissue dielectric constant (TDC) values that depend strongly on water content. Our first aim was to test this hypothesis. Also, since inter-side TDC ratios are used to assess edema and lymphedema, the second aim was to test if TDC ratios are race-dependent. The third aim was to determine the extent to which TDC depends on total body water (TBW) and fat (TBF)...
March 7, 2017: Skin Research and Technology
M C Meinke, S B Lohan, W Köcher, B Magnussen, M E Darvin, J Lademann
BACKGROUND: A nutrition rich in fruit and vegetables and a healthy lifestyle become more and more important in the industrial countries to counteract oxidative stress and promote health. For many years, it has been possible to control human cutaneous carotenoids noninvasively by resonance Raman spectroscopic systems and by spatially resolved reflectance spectroscopy. METHODS: Ten volunteers took a commercially available fruit and vegetable extract daily for a time period of 5 weeks...
March 7, 2017: Skin Research and Technology
T Houser, C Zerweck, G Grove, R Wickett
BACKGROUND/PURPOSE: This research investigated the ability of shadow analysis (via the Courage + Khazaka Visioline and Image Pro Premiere 9.0 software) to accurately assess the differences in skin topography associated with photo aging. METHODS: Analyses were performed on impressions collected from a microfinish comparator scale (GAR Electroforming) as well a series of impressions collected from the crow's feet region of 9 women who represent each point on the Zerweck Crow's Feet classification scale...
March 7, 2017: Skin Research and Technology
D Hui, J Hong-Yan, X Ai-E
No abstract text is available yet for this article.
February 10, 2017: Skin Research and Technology
K Lee, M Kim, O Lee, K Kim
BACKGROUND/PURPOSE: A problem in skin rendering with haptic feedback is the reconstruction of accurate 3D skin surfaces from stereo skin images to be used for touch interactions. This problem also encompasses the issue of how to accurately remove haptic spatial noise caused by the construction of disparity maps from stereo skin images, while minimizing the loss of the original skin roughness for cloning real tough textures without errors. Since the haptic device is very sensitive to high frequencies, even small amounts of noise can cause serious system errors including mechanical oscillations and unexpected exerting forces...
January 12, 2017: Skin Research and Technology
A Zapletalova, V Pata, R Janis, K Kejlova, P Stoklasek
BACKGROUND: The aim of this article is to present a new methodology for assessment of skin topology using a three-dimensional image (3D). METHODS: The measurement of the skin surface roughness is based on 3D scanning of silicone replicas by chromatic aberration length technique in a contactless manner, i.e. by a polychromatic light beam. Analysis of the skin surface reprints was performed using Talymap, Gold version. Results were analysed by fractal geometry, which allows to evaluate changes of the skin surface before and after application of cosmetics and instrumental cosmetological techniques...
January 12, 2017: Skin Research and Technology
W Lei, X Ai-E
No abstract text is available yet for this article.
January 12, 2017: Skin Research and Technology
K-P Wilhelm, D Wilhelm, S Bielfeldt
BACKGROUND: The healing of wounds has always provided challenges for the medical community whether chronic or acute. Understanding the processes which enable wounds to heal is primarily carried out by the use of models, in vitro, animal and human. It is generally accepted that the use of human models offers the best opportunity to understand the factors that influence wound healing as well as to evaluate efficacy of treatments applied to wounds. OBJECTIVES: The objective of this article is to provide an overview of the different methodologies that are currently used to experimentally induce wounds of various depths in human volunteers and examines the information that may be gained from them...
February 2017: Skin Research and Technology
M Nomura, D Velleman, J Pierre, F Flament
BACKGROUND: A new electro-mechanical device for measuring the lateral stiffness of the skin is now available. It basically allows to recording the forces that the skin opposes to a lateral displacement (1-2 mm) of a pinching type movement. Preliminary assays of this device to various skin sites and an artificial substrate aimed at defining its major characteristics (sensitivity, reproducibility, variations according to skin site). METHODS: The calibration of the device (Khelometer(®) ) and assessment of its reproducibility were carried out through the use of elastometer substrates of various stiffness's...
November 29, 2016: Skin Research and Technology
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