| Titre : |
Broad band, photostable prevention of UV damage |
| Type de document : |
texte imprimé |
| Auteurs : |
Robert M. Sayer, Auteur ; Paul Staniland, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 20-24 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Dermo-cosmétologie
Dioxyde de titane
Peau -- analyse
Peau -- Effet du rayonnement ultraviolet
Produits antisolaires
Résonance paramagnétique électronique
|
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
The effects of UVB radiation have been know for many years with most people protecting themselves from induced burning. More recently the damaging effects of UVA radiation have been highlighted and sunscreens are now formulated to induce protection against induced premature ageing. New skin research is showing the potential of near-UV or HEV light to induce premature ageing, the formation of wrinkles ans DNA damage.
A novel Electron Spin Resonance (ERS) technique has been developed to investigate the effect of inorganic and organic sunscreens in preventing radical generation in skin substitutes under the action of UV and near-UV radiation. A spin trap (5-5,Dimethyl-1-Pyrroline-N-Oxyde, DMPO) has been used to from spin adduct, thus prolonging the lifetime of radicals formed in the skin substitutes.
Water in oil sunscreen formulations containing titanium dioxide (TiOâ‚‚) with different levels of UVA/UVB attenuation have been used to protect the skin, and the number of radical adducts formed has been investigated.
The broad spectrum, photostable TiOâ‚‚ used in the investigation has been shown to reduce the number of radical adducts formed by 70%, when compared to unprotected skin. Thus highlighting the necessity for broad spectrum protection un sunscreen products when looking to reduce the number of radicals generated from UV and near-UV radiation. |
| Note de contenu : |
- Inorganic sunscreens
- Infrared and high-energy visible radiation
|
| En ligne : |
https://drive.google.com/file/d/1ICCZZMnWpvJ9zJ6Aytw9hmVObUCr23Fi/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22261 |
in PERSONAL CARE EUROPE > Vol. 7, N° 6 (11/2014) . - p. 20-24
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