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2. Sun protection products
2.1 Reminders about the solar spectrum
The solar spectrum extends from cosmic rays to radio waves, including UV radiation at wavelengths between 200 and 400 nm. Although UV radiation accounts for only 5% of the radiation reaching the earth's surface, it is responsible for the vast majority of observed biological effects on the skin. In 1932, William Coblentz proposed the division of the UV spectrum into 3 zones: UVC (200 – 290 nm), UVB (290 – 320) and UVA (320 – 400 nm). The UVA range is itself subdivided into 2 zones: short UVA or UVA1 (320 – 340 nm) and long UVA or UVA2 (340 – 400 nm). UV radiation reaching the earth's surface is 95% UVA and 5% UVB. Although in the minority, it is UVB that is responsible for the greatest number of skin symptoms, due to its energy, which is inversely...
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Sun protection products
Determining the effectiveness of sun protection products
Bibliography
- (1) - Protection solaire. Recommandations concernant les conditions d'étiquetage des produits de protection solaire. - http://ansm.sante.fr
- (2) - Sécurité des produits cosmétiques. Produits solaires....
Patents
New sunscreens, sunscreen compositions containing them and uses – EP 0711778 A1 (L'Oréal, 1996)
Process for photostabilizing dibenzoylmethane sunscreens with an insoluble organic filter – EP 1093797 (L'Oréal, 2001)
Composition, particularly for cosmetics, containing a steroid and a fat-soluble UV filter – CA 2355357 A1 (L'Oréal, 2001)
Compounds derived...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
BASF: Tinosorb
http://www.carecreations.basf.com
Merck: Eusolex
Organizations – Federations – Associations (non-exhaustive list)
...Standards and norms
ISO 24442:2011 Cosmetics – Sun protection evaluation methods – In vivo determination of UVA protection.
ISO 24443:2012 In vitro determination of UVA photoprotection.
ISO 24444:2010 Cosmetics – Sun protection test methods – In vivo determination of sun protection factor (SPF).
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