Insights into the stabilization of photolabile UV-absorbers in sunscreens

文献情報

出版日 2020-12-10

DOI 10.1039/D0PP00335B

インパクトファクター 0

著者

Bernd Herzog, Jochen Giesinger, Volker Settels

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要旨

Sunscreens are used to protect human skin against harmful UV radiation. Today there is a trend towards high sun protection factors (SPF) and good UVA protection. Methods for the assessment of SPF and UVA protection involve irradiation of the product, and the photostability properties of the sunscreen have an influence on its performance. Sunscreens often contain more than one UV filter. Some photolabile UV absorbers may be stabilized by the presence of other photostable UV-absorbers. Stabilization can be achieved just by a certain optical density due to the presence of such UV-filter substances. However, photostabilization may also be caused by quenching mechanisms, such as singlet–singlet or triplet–triplet energy transfer. Investigation of butyl methoxy dibenzoylmethane and ethylhexyl methoxycinnamate as photolabile sunscreens in the presence of either octocrylene or bis ethylhexyloxyphenol methoxyphenyl triazine showed that both mechanisms may apply. With the systems butyl methoxy dibenzoylmethane plus octocrylene and ethylhexyl methoxycinnamate plus bis ethylhexyloxyphenol methoxyphenyl triazine the quenching mechanism appears to be predominant.

掲載誌

Photochemical & Photobiological Sciences

CiteScore: 5.6

自己引用率: 7.4%

年間論文数: 154

Photochemical & Photobiological Sciences (PPS) is a monthly journal for the publication of original research papers (Full papers), Reviews, Perspectives, Communications and Technical notes of current interest in the areas of photochemistry and photobiology. The journal also contains a Forum section. PPS is published by Springer and is the official journal of the European Society for Photobiology (ESP) and the European Photochemistry Association (EPA). The journal publishes articles on the interaction of light with molecules, supramolecular systems or biological matter. Topics include, but are not limited to the following. Applied photochemistry Atmospheric photochemistry Bioluminescence Chronobiology DNA repair Energy transfer Environmental photobiology Environmental photochemistry Excited state properties Laser photochemistry Luminescence Mechanistic photochemistry Organic and inorganic photochemistry Photocarcinogenesis Photochemical kinetics Photochemistry of biomolecules Photochemotherapy Photochromism Photodegradation Photodermatology Photoelectrochemistry Photoimaging Photoimmunology Photomedicine Photomorphogenesis Photomovement Photoprotection Photoreception Photosensitisation Photosynthesis Phototechnology Phototherapy Phototoxicity Solar energy utilisation Spectroscopy Spectroscopy of biological systems Supramolecular photochemistry Synthetic photochemistry Theoretical photochemistry UV and visible radiation effects and vision