Results 141 to 150 of about 1,415 (214)

Sunscreening Agents and Sun Protective Factors

International Journal of Dermatology, 1983
Marvin J. Rapaport
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The efficacy of sunscreening agents: protection factors and transmission spectra

Clinical and Experimental Dermatology, 1982
Summary Fifty-five sunscreening agents were tested for their protection factor (PF) against ultraviolet radiation (UVR) and for transmission between 280 and 600 run. The results are tabulated so that the less efficacious sunscreens, although suitable for protection against natural and artificial light in people with normal skin, may be separated ...
J.L.M. Hawk, A.V.J. CHALLONER, L. CHADDOCK   +2 more
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Quinolines derivatives as novel sunscreening agents

Bioorganic & Medicinal Chemistry Letters, 2013
Currently, the research and development of sunscreens play an important role on the synthesis of actives that are stable in various kinds of formulations-in addition to their efficiency and broad spectrum of protection against ultraviolet radiation. Our objective here was to synthesize new sunscreening chemical agents using quinoline as a base molecule.
Hudson Polonini, Rafael M. P. Dias, Isabela O. Souza, Karla Mara Gonçalves, Tiago Braga Gomes, Nádia Rezende Barbosa Raposo, Adilson David da Silva   +6 more
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Determination of sunscreen agents by micellar electrokinetic chromatography

Journal of Pharmaceutical and Biomedical Analysis, 1995
The separation of UV-A and UV-B sunscreens by micellar electrokinetic chromatography has been studied. The optimized method, which involves the presence of an anionic surfactant (sodium dodecyl sulphate) and an organic modifier in the background electrolyte, was applied to determine these sunscreens in cosmetic products. Identification was achieved by "
P. PIETTA, A. BRUNO, P. MAURI, C. GARDANA, R. MAFFEI FACINO, M. CARINI   +5 more
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Sunscreen Intolerance: Contact Sensitization, Photocontact Sensitization, and Irritancy of Sunscreen Agents

Dermatologic Clinics, 1995
Reports of contact sensitization and photocontact sensitization induced by various sunscreening agents are reviewed. Current knowledge about the most often used sunscreening agents is summarized. The problems of cross-sensitization and sensitization in photodermatoses are discussed. Strategies for patch and photopatch testing, as well as immediate-type
Sydney H. Dromgoole, Howard I. Maibach, Jens Oliver Funk   +2 more
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A novel sunscreen agent having antimelanoma activity

Il Farmaco, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Aderbal F. Magalhães, João E. de Carvalho, Francisco B. T. Pessine, Luciana K. Kohn, Márcia Aparecida Antônio, Anita J. Marsaioli, Eva G. Magalhães, Marisa A. Nogueira, Debora N. Biloti, Antonio Laverde   +9 more
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Methods for the evaluation of melanin as a sunscreen agent

2023
This thesis outlines the development of four new procedures (1) to synthesise melanins reproducibly, (2) to objectively determine the degree of structural similarity between melanins (3) to use diffuse reflectance to objectively measure skin colour and (4) to evaluate the SPF of melanin and other sunscreen formulations using in vitro methods.
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Nanoparticles as delivery vehicles for sunscreen agents

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012
Abstract Sunscreen filters, which block hazardous UV radiation, are commonly applied in cosmetic products to protect the skin, the hair, or the product itself. Most sunscreen formulations are emulsions or creams. However, formulations based on nanoparticles as the delivery vehicle for the sunscreen compounds potentially have advantages in terms of ...
Lei Shi, Jingning Shan, Yiguang Ju, Patricia A. Aikens, Robert K. Prud'homme   +4 more
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The spectral stability of several sunscreening agents on stratum corneum sheets

International Journal of Cosmetic Science, 1987
SynopsisFilm layers of seventeen commercially available sunscreen products and sixteen active ingredients on stratum corneum sheets were spectrophotometrically monitored before and after simulated solar irradiation. Fixed irradiation doses were given within the daily terrestrial limits.
Arthur Kammeyer, W. Westerhof, P. A. Bolhuis, A. J. Ris, E A Hische   +4 more
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Potentials of Botanicals as Sunscreen Agents: A Review

Research Journal of Pharmacognosy and Phytochemistry, 2018
Sun exposure is the main etiological agent for most type of skin cancer, photocarcinogenesis, photo ageing, thus adequate photoprotection is essential to control UV related disorders. Approaches including use of physical photoprotective agents and sunscreen are used widely but in addition to this there are agents who can further improve the effect of ...
Yogesh Shivhare, Prashant Soni, Pratyush Jain, Alok Pal Jain   +3 more
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