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Mention de date : 10/1998
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Ajouter le résultat dans votre panierMorphological investigation of chemical peel on photodamaged facial skin / M. H. El Samahy in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 20, N° 5 (10/1998)
Titre : Morphological investigation of chemical peel on photodamaged facial skin Type de document : texte imprimé Auteurs : M. H. El Samahy, Auteur ; N. Ramzy, Auteur ; M. M. Ghoz, Auteur Année de publication : 1998 Article en page(s) : p. 269-282 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Chemical peel Photodamaged skin Ultrastructural features Index. décimale : 668.5 Parfums et cosmétiques Résumé : Chemical peeling involves the topical application of a wounding agent with the goal of effecting an organized regeneration of the skin. The histological and ultrastructural features of actinic- and age-related damage include structural abnormalities that disrupt normal epidermal and dermal architecture. In the present study, five patients with actinically damaged skin underwent an enhanced medium depth peel using 70 % glycolic acid and 35 % trichloroacetic acid. Biopsy specimens were taken before the peel, and 3 months after the peel for histological and electron microscopic examination. Clinical resolution of actinic damage corresponded with restoration of epidermal polarity. Characteristic histological and ultrastructural features of the skin after peeling include markedly decreased epidermal intracytoplasmic vacuoles, decreased elastic fibres, increased activated fibroblasts and organized parallel arrays of collagen fibrils. We conclude that electron microscopic studies after a medium depth peel of photodamaged skin reveal more profound changes than those seen histologically. DOI : 10.1046/j.1467-2494.1998.181650.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1998.181650.x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5006
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 20, N° 5 (10/1998) . - p. 269-282[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003975 - Périodique Bibliothèque principale Documentaires Disponible
Titre : O/W emulsion and W/O/W multiple emulsion : physical characterization and skin pharmacokinetic comparison in the delivery process of caffeine Type de document : texte imprimé Auteurs : O. Doucet, Auteur ; Leonhard Zastrow, Auteur ; N. Garcia, Auteur ; Louis Ferrero, Auteur Année de publication : 1998 Article en page(s) : p. 283-295 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Caffeine Microscopy 'Percutaneous absorption' Rheology W/O/W 'Multiple emulsion' Characterization Index. décimale : 668.5 Parfums et cosmétiques Résumé : The aim of this study was to compare the characteristics of an O/W emulsion and a W/O/W emulsion, formulated with similar ingredients. The physical properties of these two types of vehicles were characterized first. Using three types of in vitro models, human skin biopsies, nitrate acetate cellulose membranes and human reconstituted epidermis, the delivery potential of each vehicle for one hydrophilic drug, caffeine, was compared. The assessment of physical parameters, such as particle size, conductivity and rheological behavior enabled the nature of the test emulsions to be clearly identified. Clear differences were observed in the ability of each type of emulsion to deliver caffeine. Whatever the nature of the membrane used for the pharmacokinetic study, the absorption of caffeine was roughly two-fold lower (2.6 for human skin) when the W/O/W multiple emulsion was used as the vehicle. The concomitant determination of physical and kinetic properties of these two test emulsions allowed the W/O/W multiple emulsion and a simple O/W emulsion to be clearly differentiated. DOI : 10.1046/j.1467-2494.1998.181621.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1998.181621.x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5007
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 20, N° 5 (10/1998) . - p. 283-295[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003975 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Environmental fate and effects of dimethicone and cyclotetrasiloxane from personal care applications Type de document : texte imprimé Auteurs : C. Stevens, Auteur Année de publication : 1998 Article en page(s) : p. 297-305 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Dimethicone Cyclotetrasiloxane Environmental degradation effects Monitoring data Index. décimale : 668.5 Parfums et cosmétiques Résumé : This paper summarizes the environmental fate and effects of dimethicone and cyclotetrasiloxane, which are used extensively in personal care applications. Dimethicone and cyclotetrasiloxane differ fundamentally in their physicochemical properties, and as a consequence display different environmental fate paths. Cyclotetrasiloxane partitions into the atmosphere, whereas sediments and soils are the most important environmental compartments for dimethicone. Information is presented to show the environmental degradation of these two materials in their respective environmental compartments. In both cases, after a non-biological step to initiate the process, the degradation occurs biologically. Ultimately, both dimethicone and cyclotetrasiloxane are degraded to inorganic constituents, carbon dioxide, silicic acid and water. No adverse effects have been detected in experimental organisms representative of the environmental compartments in which dimethicone and cyclotetrasiloxane may be found. Monitoring of key environmental compartments, namely sediments and soil, reveals that average concentrations are well below the no-observed adverse effect level. This work therefore continues to support the environmental acceptability of dimethicone and cyclotetrasiloxane for personal care applications. DOI : 10.1046/j.1467-2494.1998.181595.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1998.181595.x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5008
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 20, N° 5 (10/1998) . - p. 297-305[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003975 - Périodique Bibliothèque principale Documentaires Disponible
Titre : In vitro skin permeation evaluation : the only realistic option Type de document : texte imprimé Auteurs : K. A. Walters, Auteur ; Keith R. Brain, Auteur ; A. Watkinson, Auteur Année de publication : 1998 Article en page(s) : p. 307-316 Note générale : Bibliogr. Langues : Anglais (eng) Tags : In vitro skin permeation Nitrosamine Risk assessment Sunscreen Surfactant Index. décimale : 668.5 Parfums et cosmétiques Résumé : Increasing requirements for cruelty-free risk assessment in the cosmetic industry have led to the development of several alternative experimental evaluation strategies. Quantification of the potential dermal absorption of ingredients of cosmetic and other formulations by determination of human skin permeation rates in vitro is particularly relevant. Using modifications of standard in vitro protocols the human skin permeation rates of several cosmetic ingredients and potential contaminants have been determined under conditions designed to mimic consumer use. Skin penetration and permeation of octyl salicylate (a sunscreen), nonylphenol ethoxylates (surfactants) and three nitrosamines (potential contaminants) is discussed. The data demonstrate the usefulness of this technique as a tool in the overall risk assessment of cosmetic formulations. DOI : 10.1046/j.1467-2494.1998.181622.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1998.181622.x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5009
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 20, N° 5 (10/1998) . - p. 307-316[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003975 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Rheology of two commercially available cosmetic oil in water emulsions Type de document : texte imprimé Auteurs : A. H. Förster, Auteur ; T. M. Herrington, Auteur Année de publication : 1998 Article en page(s) : p. 317-326 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Cosmetics Emulsion Rheology Index. décimale : 668.5 Parfums et cosmétiques Résumé : Rheological experiments were performed on two cosmetic O/W creams, CG Clarifying and CG Clean, before and after treatment (temperature, tumbling, centrifugation). Viscometry experiments were conducted in a shear range of 0.48–58 s-1. Strain sweeps were carried out at 0.1, 1, 5 and 10 Hz. Finally, frequency sweeps were performed in the linear viscoelastic region between 0.1 and 5 Hz. The characteristics of a 'good' O/W cream were found to be shear thinning behaviour, low yield stress, and predominately elastic behaviour. DOI : 10.1046/j.1467-2494.1998.181707.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1998.181707.x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5010
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 20, N° 5 (10/1998) . - p. 317-326[article]Réservation
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 003975 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
