Benefits of organic & inorganic UV filters / Bethan Spruce in GLOBAL PERSONAL CARE, Vol. 22, N° 9 (10/2021)  

[article]  inGLOBAL PERSONAL CARE > Vol. 22, N° 9 (10/2021) . - p. 39-42 Titre : Benefits of organic & inorganic UV filters Type de document : texte imprimé Auteurs : Bethan Spruce, Auteur Année de publication : 2021 Article en page(s) : p. 39-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés inorganiques Composés organiques Evaluation Facteur de protection solaire Formulation (Génie chimique) Produits antisolaires Index. décimale : 668.5 Parfums et cosmétiques Résumé : With the ever-growing popularity of sunscreens, it is important for the formulator to use the most effective and efficient strategies to maximise the protection potential of each UV filter within a formulation. Studies have shown that exploiting the synergistic effects of a combination of organic and inorganic UV filters can greatly benefit the overall formulation by allowing for higher solids loading, less interaction with organic UV filters and lower costs per unit of SPF. The synergy benefits of using both types of UV filters are well documented and are based upon the different mechanisms of protection from each type of UV filter working differently to each other but also working well together. This has previously been demonstrated in a study using the Monte Carlo calculation, which used typical optical parameters of the skin to characterise the synergy effect when organic and inorganic UV filters are used together. This proved that the synergistic performance is caused by light scattering from inorganic UV filters in combination with organic UV filters.- Note de contenu : - In vitro SPF evaluation - In vivo SPF & in vitro UVAPF - Tables : Formulations with different emulsifiers En ligne : https://drive.google.com/file/d/1tJb_-4vnT-uX9yWh472AU3dbqbrxa4oc/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36890 [article]

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Working with TiO2 UV filters in powder form / Bethan Spruce in GLOBAL PERSONAL CARE, Vol. 23, N° 5 (05/2022)  

[article]  inGLOBAL PERSONAL CARE > Vol. 23, N° 5 (05/2022) . - p. 45-48 Titre : Working with TiO2 UV filters in powder form Type de document : texte imprimé Auteurs : Bethan Spruce, Auteur ; Aline Souza, Auteur ; Ellen Copsey, Auteur Année de publication : 2022 Article en page(s) : p. 45-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane Emollients Microscopie Peau -- Soins et hygiène Produits antisolaires Viscosité Index. décimale : 668.5 Parfums et cosmétiques Résumé : Croda Europe reveals the findings of a study of emollients mixed with different titanium dioxide powders, each optimised to provide a different sun care-relevant claim As consumer awareness of the importance of sun protection increases, there is growing demand for daily-use sun protection products with light sensory qualities alongside natural and other claims As a result, inorganic UV filters are growing in popularity due to their mildness and lack of skin penetration compared to organic UV filters, as well as other factors such as their natural mineral origin. The most commonly used inorganic UV filters are titanium dioxide (TiO2) and zinc oxide (ZnO). This article will cover how to optimise emollient selection and the minimum level of emollient required when formulating with mineral UV filter powders. Note de contenu : - Emollient selection - Experiment design - Interaction (bottle test) - Oil absorbency (burette test) : Less oil required - More oil required - Viscosity of dispersions - Microscopy of dispersions - Table 1 : Emollients assessed in this study - Table 2 : Coated TiO2 powders assessed in this study - Table 3 : Oil absorbencies - TiO2 powders (ML/100G) - Table 4 : Viscosity measurements of TiO2 dispersions (Spindle 7, 10RMP, 1 MIN, CP) En ligne : https://drive.google.com/file/d/110e3utUsYr_OVpG09SvEx4nGJFLg7000/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37732 [article]

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