| Titre : |
Optimization of sunscreen efficacy |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Schwarzenbach, Auteur ; U. Huber, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 20-23 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Facteur de protection solaire
Produits antisolaires
Synergie
|
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
The SPF (Sunburn Protection Factor) is a quantitative efficacy parameter of a cosmetic sunscreen describing UVB-protection. It is measured in vivo on human volunteers using the erythema as endpoint and one of the established measuring protocols. The SPF is not only the result of the absorption properties of the UV-filter combination chosen and their concentration in he sunscreen product, but is influenced to a large extend by the film-building properties of the vehicle and the uniform distribution of the UV-filter(s) in the formulation. |
| Note de contenu : |
- DEFINITIONS : addition - Synergy - SPF-Boosting
- SPF - SYNERGY
- RELATIONSHIP BETWEEN SPF AND UV-FILTER CONCENTRATION
- SPF - BOOSTING
- FILM-BUILDING PROPERTIES
- FIGURES : 1. Addition and synergy between lipophilic and hydrophilic UV-filters - 2.Stacking of EHMC (Ethyl Helyx Methocy Cinnamate) - 3. Distribution of UV-filter molecules on skin - 4. SPF-boosting with polyvinyl pyrrolidone copolymers - 5. Model presentations of the influence of C-chain length on filter distribution - 7. Comparison of SPF's obtained with equal amounts of UV-filters in the same type of emulsion - 8. Comparison of SPF's of an O/W emulsion containing 7.5% EHMC and additional film-building components |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28168 |
in SOFW JOURNAL > Vol. 128, N° 6 (06/2002) . - p. 20-23
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