Method and apparatus for determining effectiveness of...

Details Method and apparatus for determining effectiveness of... Method and apparatus for determining effectiveness of...

A - Human Necessities

61

K

A61K 49/00 (2006.01) G01N 24/10 (2006.01) G01N 33/50 (2006.01) G01R 33/60 (2006.01) A61K 7/42 (2000.01)

Patent

CA 2504346

The present invention provides a method and apparatus for measuring the effectiveness of a sunscreen composition or other skin preparation in reducing the exposure of human skin to UVA radiation, wherein differential electron spin resonance spectroscopy is used to quantify the extent of UVA-~induced ascorbate or other measurable radical production in the shielded skin, in comparison with reference, preferably unshielded, skin.

L'invention concerne un procédé et un appareil pour mesurer l'efficacité de la composition d'un écran total ou de toute autre préparation pour la peau permettant la réduction de l'exposition de la peau humaine au rayons UV. La spectroscopie par résonance du spin électronique différentielle est utilisée pour quantifier l'extension de l'ascorbate induit dans les UV ou toute autre production radicale mesurable dans la peau protégée, par rapport à une peau de référence, de préférence non protégée.

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