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Journal of Cosmetic Science

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https://www.readbyqxmd.com/read/29799811/rapid-method-for-the-gas-chromatographic-quantitative-analysis-to-determinate-safrole-in-commercial-essential-oils
#1
Sheng-Ching Chan, Youk-Meng Choong, Shun-Hsiang Weng
Safrole is a well-known carcinogenic agent that is present in camphor trees. In this study, a gas chromatographic method was established to quantitate the levels of safrole in essential oils using n-decyl alcohol as an internal standard. The method used a nonpolar column and was able to detect concentrations of safrole as low as 5 µg/ml in the samples. Following addition of 2-10 mg of safrole into 1 g of essential oil extracted from Stout Camphor wood ( Cinnamomum kanehirai Hayata) or 1-10 mg of safrole into 1 g of essential oil extracted from Small-flower Camphor wood ( Cinnamomum micranthum Hayat), the recovery rates of safrole were determined...
March 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29799810/reducing-facial-wrinkle-size-and-increasing-skin-firmness-using-skin-care-polymers
#2
Marc N G de Mul, Tanya Uddin, Xi Yan, Amber Hubschmitt, Björn Klotz, Wendy Kin Man Chan
Many cosmetic polymers shrink on drying, producing a tensile force if coated on a substrate. This tensile force can be used to smoothen wrinkles and pores in facial skin. In this study, we evaluated two polymers, a polyvinylpyrrolidone (PVP) and a polyacrylate, for skin tightening properties. We conducted a double-blinded, placebo-controlled and randomized clinical study with 32 female volunteers aged 35-65 years who perceived themselves to have a loss of skin elasticity. Both polymers were formulated in a model cosmetic emulsion with hydrogenated polyisobutene as the oil phase...
March 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29799809/structural-analysis-of-macrofibrils-in-a-human-permanent-waved-hair-by-scanning-microbeam-small-angle-x-ray-scattering-measurements
#3
Maki Fukuda, Yuki Marubashi, Teppei Nawa, Reina Ikuyama
It has been experimentally shown that hair subjected to permanent wave treatment quickly changes into uncurled hair during daily hair-care activities. However, the mechanism of curl fallout has not been clarified. In previous studies, the relationship between permanent wave treatment and disulfide bonds in hair has been studied. Because permed hair falls out its waves without any chemical treatment, we focused on the hair microstructure rather than the disulfide bonds. To examine the relationship between the hair curl shape and the intermediate filament (IF) organization in hairs, scanning microbeam small-angle X-ray scattering measurements were performed...
March 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29799808/health-knowledge-cosmetic-interests-attitude-and-the-need-for-health-education-regarding-the-use-of-topical-bleaching-agents-among-women-in-west-saudi-arabia-a-cross-sectional-study
#4
Mariam Eid Alanzi, Riyadh A Alghamdi, Osama Mohammed Alsharif, Khaled S Alghamdi, Salah Mohammed El Sayed
We aimed at investigating the cosmetic interests, public confidence in cosmetic industry, health knowledge, practice, and need for health education regarding using topical bleaching agents (TPAs) among a relatively big sample size in Al-Madinah (west Saudi Arabia, a conservative eastern society that acquires its social customs from Islam). Islamic values increased women respect and esteem in this society. This is reflected on cosmetic practices and attitude, e.g. women use face cover outdoors. This issue is vital for both women health and beauty, and is rarely discussed...
March 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29799807/application-of-check-all-that-apply-cata-questions-for-sensory-characterization-of-cosmetic-emulsions-by-untrained-consumers
#5
Gabriella Baki, Mihaly Szoboszlai, Matthew W Liberatore, Mark Chandler
The sales potential of cosmetic products is greatly determined by skin feel and skin sensory performance. To please the target audience, it is important to gather information about consumers' perception of products' sensory characteristics. In this study, six different emulsions were formulated. Samples represented three different types of emulsions, including steric-stabilized oil-in-water (O/W), liquid crystal-stabilized O/W, and water-in-oil emulsions, providing different skin feel and aesthetics. Emulsions within the same group differed in the emollients, providing similar sensory attributes...
March 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658879/the-rheological-and-skin-sensory-properties-of-cosmetic-emulsions-influence-of-thickening-agents
#6
Yanan Li, Zhaoqing Zhou, Xiaomin Zhao, Hua Zhao, Xin Qu
Hydrophilic polymers are widely used in the cosmetics industry as thickening agents/rheology modifiers. These thickening agents have different chemical structures which affect the rheological properties, as well as the sensory attributes of the formula. Systematic study is important to determine the relationship among them. Six commonly used hydrophilic polymers, including cellulose derivatives and synthetic polymers, were used as thickening agents in a series of oil-in-water emulsions. The rheological properties were evaluated in relation to the thickening mechanism and polymer structures...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658878/comparing-the-influence-of-five-patch-types-on-the-result-of-a-12-day-cumulative-irritancy-patch-test
#7
Xi Wang, Xiaohong Shu, Lin Zou, Zhaoxia Li, Li Li
A 12-day cumulative irritancy patch test is available for predicting skin irritation potential. This study is important to determine the ideal patch type to be used in the irritancy patch test. This study was conducted to determine the cumulative skin irritation potential of five different patch types using predictive patch test techniques. Five types of patches were tested in a 12 day repeated insult test. The patch types were Hill Top Chamber occlusive, Finn Chamber occlusive, Band-Aid semiocclusive, Webril® semiocclusive, and Webril® occlusive...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658877/simulation-of-the-elastin-and-fibrillin-in-non-irradiated-or-uva-radiated-fibroblasts-and-direct-inhibition-of-elastase-or-matrix-metalloptoteinases-activity-by-nicotinamide-or-its-derivatives
#8
Neena Philips, Jovinna Chalensouk-Khaosaat, Salvador Gonzalez
Skin aging/photoaging is associated with altered the structure of collagen and elastin fibers, and increased activity of matrix metalloproteinases (MMP) and elastase. Nicotinamide and its derivatives, 2,6-dihydroxynicotinamide, 2,4,5,6-tetrahydroxynicotinamide, and 3-hydroxypicolinamide (collectively niacin derivatives) stimulate fibrillar collagen and heat shock proteins in dermal fibroblasts. The goal of this research was to extend the understanding of the anti-skin aging mechanism of these niacin derivatives through the stimulation of elastin (at the protein and promoter levels), fibrillin (1 and 2) in nonirradiated or ultraviolet (UVA) radiated dermal fibroblasts, and through the direct inhibition of MMP (1, 3, and 9) and elastase activities...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658876/use-of-l-glutamic-acid-in-a-new-enrichment-broth-r-tatp-broth-for-detecting-the-presence-or-absence-of-molds-in-raw-ingredients-personal-care-product-formulations-by-using-an-atp-bioluminescence-assay
#9
Youjun Yang, Donald J English
The present study reports the effects of adding L-glutamic acid to a new enrichment broth designated as R-TATP broth, to promote the growth of slow-growing mold microorganisms such as Aspergillus brasiliensis and Aspergillus oryzae , without interfering in the growth of other types of microorganisms. This L-glutamic acid containing enrichment broth would be particularly valuable in a rapid microbial detection assay such as an adenosine triphosphate (ATP) bioluminescence assay. By using this new enrichment broth, the amount of ATP (represented as relative light unit ratio after normalized with the negative test control) from mold growth was significantly increased by reducing the time of detection of microbial contamination in a raw ingredient or personal care product formulation from an incubation period of 48-18 h...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658875/new-aspects-of-the-structure-of-human-scalp-hair-ii-tubular-structure-and-material-flow-property-of-the-medulla
#10
Asao Yamauchi, Kiyoshi Yamauchi
Asian scalp hair fibers were made thin by treatment with papain or sliced along the longitudinal axis or randomly cut by mechanical means. Optical microscopic observations of the resulting specimens indicated that (i) the medulla (M) consisted of two types of the M-surrounding cells which were linearly linked one another to form a tubular structure running through the fiber and (ii) the drum-shaped vesicles containing small proteinous granules were neatly or sparsely stored within the tube. On the other hand, H+ and OH- ions were able to move spontaneously from one end to another through the M tube...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658874/evaluation-on-an-optical-scanning-device-for-skin-profile-measurement
#11
Jiuai Sun
This paper describes experimental evaluations of an optical scanning device for skin surface recovery using multiple light source photometric stereo method. The portable optical device based on the principle of six-light photometric stereo was developed and subjected to evaluation and advancement through clinical trials for the purpose of monitoring skin conditions. As the device can provide objective topographic data for the description of the skin surface condition, the evaluation processes are mainly applied on skin in vitro and in vivo and compared with a commercial product, PRIMOS, which has been so far considered as a standard device used for skin surface measurement...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29658873/a-prototype-lip-balm-summary-of-three-dermatological-studies-demonstrating-safety-and-acceptability-for-sensitive-skin
#12
Stephanie Nisbet
Data were generated from three studies to assess the tolerability and acceptability of a prototype cosmetic lip balm. Dermatological assessments of topical compatibility (primary and cumulative irritability and sensitization), photoirritant and topical photosensitizer potential, and acceptability for safe use of a prototype cosmetic lip balm on sensitive skin are summarized. In Study 1, the product was applied to the volunteers' backs under a semiocclusive patch followed by patch removal/reapplication over 6 weeks to assess the irritant and allergic potential of the product...
January 2018: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616619/letter-to-the-editor
#13
LETTER
Paolo Giacomoni
No abstract text is available yet for this article.
July 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616618/the-antiwrinkle-and-antimelanogenic-effects-of-the-nonedible-part-of-sorghum-bicolor-l-moench-and-their-augmentation-by-fermentation
#14
Da Eun Lee, Jeong Eun Kwon, Eui Su Choung, Sung Ryul Lee, Se Chan Kang
Sorghum [ Sorghum bicolor (L.) Moench] is a major cereal crop. Despite the wide cultivation of sorghum, its stalks are used as hay and silage. The plant has numerous bioactive compounds including cosmeceutical ingredients. Thus, we investigated the antimelanogenic and SSE that is prepared from the stalk of Sorghum bicolor L. (SSE) after ethanol (EtOH) extraction. Based on the antioxidant capacity, antityrosinase activity, and suppression of the protein expression levels of matrix metalloproteinase (MMP)-1, -2, and -3 in human neonatal foreskin HDF-N cells, a 50% EtOH extraction of SSEs showed antimelanogenic and antiwrinkle potential...
July 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616617/formulation-of-chitosan-patch-incorporating-artocarpus-altilis-heartwood-extract-for-improving-hyperpigmentation
#15
Jutatip Kwankaew, Preeyawass Phimnuan, Sombat Wanauppathamkul, Jarupa Viyoch
Artocarpus altilis heartwood extract contains the bioactive compound artocarpin which exhibits melanogenesis inhibitory activity. However, the extract has poor solubility which affects the skin permeability of the compound. A chitosan hydrogel patch incorporating A. altilis heartwood extract was formulated to enhance the delivery of an amount of artocarpin sufficient for depigmenting the skin. The extract was prepared as an o/w microemulsion before blending with an aqueous solution of chitosan. The hydrogel patch was formulated by blending in a 1:1 ratio by weight of 4% w/w chitosan solution and 0...
July 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616616/non-comedogenic-and-non-acnegenic-claim-substantiation
#16
Craig Weiss, Michael Caswell
There are currently two methods to evaluate comedogenecity. One is the inexpensive human model developed by Mills and Kligman and modified by others. The second is the more costly human clinical trial, which is the gold standard for comedogenesis and to which the human model is compared. The qualification of each method to support the comedogenecity claim is evaluated and contrasted.
July 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616615/assessment-of-bacterial-contamination-of-lipstick-using-pyrosequencing
#17
So Y Lee, Si Y Lee
As soon as they are exposed to the environment, cosmetics become contaminated with microorganisms, and this contamination accumulates with increased use. In this study, we employed pyrosequencing to investigate the diversity of bacteria found on lipstick. Bacterial DNA was extracted from 20 lipstick samples and mixed in equal ratios for pyrosequencing analysis. As a result, 105 bacterial genera were detected, four of which ( Leifsonia , Methylobacterium , Streptococcus , and Haemophilus ) were predominant in 92% of the 19,863 total sequence reads...
July 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616623/color-profiles-and-stability-of-acylated-and-nonacylated-anthocyanins-as-novel-pigment-sources-in-a-lipstick-model-a-viable-alternative-to-synthetic-colorants
#18
Alexandra Westfall, Mónica Giusti
Cosmetics, such as lipstick, can affect an individual's perception of attractiveness and morale. Consumer concern with the safety of synthetic colorants has made the need for alternative natural color sources increasingly urgent. Our goal was to evaluate the feasibility of anthocyanin (ACN) extracts as colorants in lipstick formulations. Lipstick formulations were colored with ACN-rich materials. Accelerated environmental testing typical of the cosmetic industry were used: incubation at 20°, 37°, and 45°C for 12 weeks and temperature abuse cycles between 20°/37°C or -20°/20°C...
May 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616622/development-of-a-preclinical-surfactant-skin-penetration-assay-to-reflect-exposure-times-typical-of-consumer-use
#19
Nicole Mccardy, Ryan Thompson, Matthew Miller, Peter Styczynski, Stephanie Ventura, Robert Glenn, Gerald B Kasting
Mixed surfactant and surfactant-polymer compositions have been reported to decrease surfactant deposition onto and penetration into the skin relative to single surfactant compositions, potentially improving the mildness of the product. Previous workers in this area [see Moore et al., J. Cosmet. Sci. 54 :29-46 (2003), and subsequent publications] employed a procedure in which excised porcine skin was exposed to a surfactant solution containing radiolabeled sodium dodecyl sulfate (14 C-SDS) for 5 h. We have developed an improved SDS penetration assay using excised human skin that reflects typical consumer exposure times for rinse-off products...
May 2017: Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29616621/two-randomized-studies-to-evaluate-the-cooling-sensation-consumer-liking-and-tolerability-of-a-skin-disinfectant-spray
#20
RANDOMIZED CONTROLLED TRIAL
Peili Gong, Nan Wang, Lei Guan, Wei Lai
The aim of these two clinical studies was to evaluate the sensory characteristics and irritation potential of a prototype disinfectant spray (containing 0.13% w/v benzalkonium chloride and a cooling agent) in subjects with experimental wounds. The pilot study was a single center, "replicated latinClinicalTrials.ClinicalTrials. square design," randomized and double-blinded study. The pivotal study was a single center, randomized, controlled, crossover, double-blinded study, following a direct comparison test design of the study products...
May 2017: Journal of Cosmetic Science
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