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Formulating for efficacy / Johann W. Wiechers in IFSCC MAGAZINE, Vol. 7, N° 1 (01-02-03/2004)
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Titre : Formulating for efficacy Type de document : texte imprimé Auteurs : Johann W. Wiechers, Auteur ; Caroline L. Kelly, Auteur ; Trevor G. Blease, Auteur ; J. Chris Dederen, Auteur Année de publication : 2004 Article en page(s) : p. 13-20 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Ingredients actifs' 'Profils de distribution peau' 'Sélection d'émollients' 'Index relatif polarité' 'Système livraison' 'Conception formulation' 'Coefficient cloison d'octanol/eau' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Active ingredients have been around in cosmetics for a long time but have they really resulted in active cosmetic products? In order to achieve this, the right ingredient needs to be delivered to the right location at the right concentration for the correct period of time and the extent (and therefore the concentration) of this delivery depends on the formulation.
From a rather theoretical approach based on the polarity of the active ingredient, the stratum corneum and the oil phase, the relative polarity index was established that enables the selection of a suitable emollient for ensuring skin penetration of the active ingredient. Practical examples subsequently show the validity of this approach that demonstrates that one can regulate the delivery of an active molecule (and therefore the efficacy of a cosmetic formulation) by selection and control of the emollient system. Cosmetic formulations are generally quite complex mixtures and subsequent experiments using different emulsifier systems indicated that this component of a cosmetic formulation could also have an impact on steering the active ingredient to the right layer of the skin, although it is too early to be able to derive general rules from this.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10541
in IFSCC MAGAZINE > Vol. 7, N° 1 (01-02-03/2004) . - p. 13-20[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003882 - Périodique Bibliothèque principale Documentaires Disponible The role of gamut, intuition and engagement in colour management in a design context / Phil Henry in COLORATION TECHNOLOGY, Vol. 136, N° 3 (06/2020)
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Titre : The role of gamut, intuition and engagement in colour management in a design context Type de document : texte imprimé Auteurs : Phil Henry, Auteur ; Stephen Westland, Auteur Année de publication : 2020 Article en page(s) : p. 255-262 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Gestion des couleurs' 'Gamme de 'Sélection 'Mélange couleurs additif' soustractif' Intuition Engagement Conception Index. décimale : 535.6 Couleur Résumé : Colour management is ubiquitous in the digital world. However, despite the many advances in colour management over the last couple of decades, it remains an imperfect process. In the art and design community there is often a level of dissatisfaction and deep cynicism about colour management that can lead to lac of engagement with the process. This research explores colour management in a design context though three issues : the gamut issue , the intuitive issue and the engagement issue ; each relates to areas where colour management could better connect with tacit design knowhow. The work focusses on the selection of colour in a digital context since for many users this is the first touch point that they have with colour management. Psychophysical studies have been carried out in both laboratory and design-studio settings. It is shown that users can better predict the results from subtractive colour mixing than from additive colour mixing. The performance of various types of colour picker are explored and consequences for the design of user interfaces are discussed. DOI : https://doi.org/10.1111/cote.12449 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12449 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34298
in COLORATION TECHNOLOGY > Vol. 136, N° 3 (06/2020) . - p. 255-262[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21787 - Périodique Bibliothèque principale Documentaires Disponible