Results 181 to 190 of about 48,877 (239)
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Transparent formulations of a liposoluble sunscreen agent in an aqueous medium
International Journal of Cosmetic Science, 1990SynopsisTransparent formulations of a liposoluble sunscreen in an aqueous medium were studied, taking into account the different chemicals of a selected system situated in the vertices of a regular tetrahedron: sunscreen agent, co‐solvent, (surfactants ± mineral oil) mixture (in the tetrahedron base) and water as the fourth component.
C. Ferrando +4 more
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Sunscreening agent intolerance: Contact and photocontact sensitization and contact urticaria [PDF]
Journal of the American Academy of Dermatology, 1990 Reports in the literature of sensitization associated with many commonly used sunscreening agents including p-aminobenzoic acid (PABA), PABA derivatives, anthranilates, salicylates, cinnamates, benzophenones, and dibenzoylmethane derivatives are reviewed. Several of these case reports involved subjects with various photodermatoses, implicating enhanced
Howard I. Maibach, Sydney H. Dromgoole
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Electroanalytical determination of the sunscreen agent octocrylene in cosmetic products
International Journal of Cosmetic Science, 2011SynopsisAn electroanalytical method was developed to detect and quantify the sunscreen agent octocrylene (OCR) in cosmetic products. The method was based on electrochemical reduction, using voltammetric techniques. OCR was reduced at −0.97 V vs. Ag/AgCl on a glassy carbon electrode using a mixture of Britton–Robinson buffer (0.04 mol L−1) and ethanol ...
J. B. G. Júnior +3 more
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Biodegradable polymer nanocapsules containing a sunscreen agent: preparation and photoprotection
European Journal of Pharmaceutics and Biopharmaceutics, 2001Biodegradable polymer nanocapsules containing the lipophilic sunscreen, Parsol MCX (OMC), as the oil core were prepared by solvent displacement. We investigated the influence of polysorbate 85 (P-85) and poloxamer 188 (P-188) as stabilizing agents, the OMC loading capacity and the photoprotective potential of the formulations.
Alvarez Roman, Rocio +3 more
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International Journal of Pharmaceutics, 1998
Abstract The interaction between the sunscreen, butyl-methoxydibenzoylmethane (BM-DBM), and parent and modified α-, β- or γ-cyclodextrins was investigated in water by phase-solubility analysis. Among the available cyclodextrins, only hydroxypropyl-β-cyclodextrin (HP-β-CD) produced a significant increase in the aqueous solubility of BM-DBM.
Scalia S +4 more
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Abstract The interaction between the sunscreen, butyl-methoxydibenzoylmethane (BM-DBM), and parent and modified α-, β- or γ-cyclodextrins was investigated in water by phase-solubility analysis. Among the available cyclodextrins, only hydroxypropyl-β-cyclodextrin (HP-β-CD) produced a significant increase in the aqueous solubility of BM-DBM.
Scalia S +4 more
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In vitro skin permeation of sunscreen agents from O/W emulsions
International Journal of Cosmetic Science, 2008The effects of different emulsifiers on the in vitro permeation through human skin of two sunscreen agents [octylmethoxycinnamate (OMC) and butylmethoxydibenzoylmethane (BMBM)] were investigated from O/W emulsions. The test formulations were prepared using the same oil and aqueous phase ingredients and the following emulsifier and coemulsifier systems:
MONTENEGRO, LUCIA +5 more
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Analytical and Bioanalytical Chemistry, 2009
The study on the photostability of six UV filters in aqueous solution was combined with investigations on the phytotoxicity of the produced degradation mixtures. During the exposure to artificial sunlight over 72 h, the degradation of three of the UV filters evaluated was observed with half-lives between 20 and 59 h.
Mechthild Schmitt-Jansen +3 more
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The study on the photostability of six UV filters in aqueous solution was combined with investigations on the phytotoxicity of the produced degradation mixtures. During the exposure to artificial sunlight over 72 h, the degradation of three of the UV filters evaluated was observed with half-lives between 20 and 59 h.
Mechthild Schmitt-Jansen +3 more
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EFFECT OF IMMUNOSUPPRESSIVE AGENTS AND SUNSCREENS ON UV CARCINOGENESIS IN THE HAIRLESS MOUSE
Australian Journal of Experimental Biology and Medical Science, 1985SummaryThe effect of two immunosuppressive agents, azathioprine and cyclophosphamide, with and without UVB sunscreen protection on UV‐induced skin carcinogenesis was studied in the albino hairless mouse.In a daily treatment regime spanning 9 weeks, groups of mice were immunosuppressed with either drug, and were exposed to minimally erythemal doses of a
Paul J. Canfield +4 more
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Nanopumpkins and a sunscreen agent: the inclusion complex of cucurbituril and Tinosorb S
Supramolecular Chemistry, 2011The commercial sunscreen agent Tinosorb S (TS) is a promising oil-soluble broad spectrum UV filter. Here, we report for the first time a water-dispersible inclusion complex of TS using cucurbituril. The synthesis was carried out via a supramolecular approach in the solid state by using the high-speed vibration milling technique.
Dipen Debnath +2 more
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[Evaluation of sunscreening agents].
Zeitschrift fur Hautkrankheiten, 1989Sunscreen preparations are evaluated according to their protection power against biological effects of ultraviolet radiation. UV-induced phenomena found on protected skin are compared with those on unprotected skin; thus the sunprotection factor is estimated.
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