Photostability assessment of sunscreens. Benzylidene camphor and dibenzoylmethane derivatives

@article{Deflandre1988PhotostabilityAO,
  title={Photostability assessment of sunscreens. Benzylidene camphor and dibenzoylmethane derivatives},
  author={Andre Deflandre and G{\'e}rard Lang},
  journal={International Journal of Cosmetic Science},
  year={1988},
  volume={10}
}
  • A. Deflandre, G. Lang
  • Published 1 April 1988
  • Physics, Chemistry
  • International Journal of Cosmetic Science
A rapid method has been developed in order to compare the photostability of several sunscreen agents incorporated in the same type of emulsion. Thin films of the different preparations were spread on quartz plates and irradiated with a solar simulator. Differences in energy distribution according to wavelengths observed with solar simulator and sun radiation were taken into account. A kinetic study of absorption properties was carried out under solar simulator irradiation. A simple calculation… 
A study of photoinduced transformations of sunscreen chemical absorbers.
Photostability studies on some commercial Australian sunscreen products were undertaken by means of spectrophotometric and chromatographic methods. High performance liquid chromatography was used to
Unexpected Photolysis of the Sunscreen Octinoxate in the Presence of the Sunscreen Avobenzone ¶
A major concern raised about photostability studies of sunscreen products is that the photodegradation of sunscreens does not readily translate into changes in product performance. This study
Anionic clays for sunscreen agent safe use: photoprotection, photostability and prevention of their skin penetration.
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Unexpected Photolysis of the Sunscreen Octinoxate in the Presence of the Sunscreen Avobenzone¶
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The results show that UV-induced changes in UV transmittance of sunscreen films correlate with changes in concentration of sunscreen agents and that irradiation of a film of this product produced free radicals detected by ESR spectroscopy that persisted even after exposure had ended.
In Vitro Assessment of Sunscreen Photostability: The Effect of Radiation Source, Sunscreen Application Thickness and Substrate
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Transmission spectroscopy, with either a quartz or a human epidermis substrate, can be used successfully to compare the photostabilities of different sunscreen products, and the ranking of the four products in terms of their photostability was the same for both substrates.
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TLDR
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Stability of UV Filters in Different Vehicles: Solvents and Emulsions
AbstractIn this paper, we analyzed the stability of several ultraviolet (UV) filters exposed to simulated solar light. Evaluation of the photostability of UV-A/UV-B filters has an important impact on
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  • Physics
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The absorption of ultraviolet light by a film of sunscreen product on the surface of the skin is considered from a theoretical standpoint. It is apparent that Beer‐Lambert's Law would predict
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