Evaluation of the avobenzone photostability in solvents used in cosmetic formulations

ABSTRACT: The use of sunscreen products is very important nowadays. The photostability of UV filters incorporated in these products must be preserved during its storing and application processes in order to achieve the claims about photoprotection of the commercial products. The photostability of av...

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Autores:
Vallejo Ocampo, John Jairo
Mesa Cadavid, Monica
Gallardo Cabrera, Cecilia
Tipo de recurso:
Article of investigation
Fecha de publicación:
2011
Institución:
Universidad de Antioquia
Repositorio:
Repositorio UdeA
Idioma:
eng
OAI Identifier:
oai:bibliotecadigital.udea.edu.co:10495/22223
Acceso en línea:
http://hdl.handle.net/10495/22223
https://revistas.udea.edu.co/index.php/vitae/article/view/8778
Palabra clave:
Filtros Ultravioletas
Ultraviolet Filters
Avobenzone
Fotoestabilidad
Avobenzona
Photoisomerization
Photostability
Fotoisomerización
Fotoradición UV
UV photoradiation
Rights
openAccess
License
http://creativecommons.org/licenses/by-nc-sa/2.5/co/
Description
Summary:ABSTRACT: The use of sunscreen products is very important nowadays. The photostability of UV filters incorporated in these products must be preserved during its storing and application processes in order to achieve the claims about photoprotection of the commercial products. The photostability of avobenzone, one of the most common UVA filters in commercial sunscreens, is assessed in solvents intended for cosmetic formulations. The study is carried out by following the spectral behavior of avobenzone solutions under irradiation and after storing them in the dark. Different photobehaviors of the avobenzona are found in the selected solvents, some of which can be explained in the same way than in analytical solvents; but for others, the structural and physical properties of the solvents must be taken into account. The most appropriate solvents for ensuring the photostability of avobenzona are mineral oil and isopropyl myristate.