Results 111 to 120 of about 1,089 (151)
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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.
F, Comelles +4 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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[Prevention of skin cancers with sunscreening agents].
Revue medicale de Liege, 2002How do sunscreens protect against skin cancers? The answer to this question is a matter of controversy among scientist for several years. The doubt persists because the wise use of such products is only one of the factors involved in sun behavior together with avoiding excessive sunlight exposure and wearing protective clothes.
I, Uhoda +2 more
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Methods for the evaluation of melanin as a sunscreen agent
1999This 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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Advances in Research on Natural Sunscreen Agents
Journal of Technology Innovation and EngineeringAs ozone layer depletion intensifies and concerns grow over the safety of chemical sunscreens, research and development of natural sun protection agents have gained increasing attention. This review provides a comprehensive review of the sources, classifications, components, and mechanisms of natural sunscreens, summarizes the challenges encountered in
null Youmin Zhu +2 more
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[Sunscreening agents in West Germany 1988].
Zeitschrift fur Hautkrankheiten, 1989The commercial UV-absorbing cosmetics and sunscreens which are currently available in Germany are presented in two tables. In addition to the UV-absorbing and light-reflecting sunscreens, we list other ingredients which may cause skin reactions or have special properties.
S, Schauder, H, Ippen
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[New aspects in the development of sunscreening agents].
Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete, 2018Sunlight is indispensable for life. Skin aging is determined not only by genetic factors but also by the influence of solar radiation which in all its spectral regions induces free radicals in the human skin. Below a critical concentration, free radicals are important for signaling processes in the human body. Exceeding a critical threshold value (FRTV)
J, Lademann +4 more
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Sensitivity to Multiple Benzophenone Sunscreen Agents
Dermatitis®, 2015Jamie L, Hanson, Erin M, Warshaw
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