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Product application technique alters the sun protection factor.
Photodermatology, photoimmunology & photomedicine, 1992A number of factors may alter the efficacy of a sunscreen product being tested. Notably among these are (1) the source of ultraviolet (UV) radiation, (2) the filtration of the UV radiation source, (3) such environmental factors as swimming or sweating (4) and/or the amount of product applied.
R M, Sayre, J, Powell, L A, Rheins
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[Sun protection factor 50+ : Pro and contra].
Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete, 2018The use of sunscreens with sun protection factors beyond 50 is controversial. In order to avoid misleading the consumer, several countries have already decided not to declare SPF beyond 50 on sunscreen products. Arguments against high SPF include the following: the risk of imbalanced protection, which could increase the risk of damage caused by longer ...
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The meaning and implication of sun protection factor
British Journal of Dermatology, 2015Reinau, D. +3 more
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Sunscreening Agents and Sun Protective Factors
International Journal of Dermatology, 1983openaire +2 more sources
Commentary: Sunscreen sun protection factor (SPF)
Journal of the American Academy of Dermatology, 2018openaire +1 more source
Comparison between evaluation methods from sun protection factors.
International journal of cosmetic science, 2013Objective methods for evaluation of Sun Protection Factors (SPF) are numerous. Only the most used methods both in vitro and in vivo will be described. The results obtained with different types of spectrophotometric methods (solution, thin layer over quartz slides or measurement of transmittance and diffusion after coating with emulsions over the ...
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WS154 Standardisation of sun protection factors
Journal of the European Academy of Dermatology and Venereology, 1997openaire +1 more source