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Scientists at the University of Malaga have taken a step forward in research on photoprotection. Experts have shown, for the first time, that sunscreens are effective on the skin after five minutes.
It is very important to use sunscreen if you are going to stay in the sun for long periods of time. Pixabay
Researchers at the University of Málaga (UMA) claim that sunscreens are effective five minutes after their application on the skin. The findings of his work have recently been published in the Journal of the European Academy of Dermatology. This study disbadembles the theory about the need to apply the cream half an hour before sunbathing.
For its development, the UMA photoprotection experts, led by Enrique Herrera, used in vitro techniques in the laboratory, from where they followed the same procedure. evolution of the cream by solar simulation, through spectral transmission measurements after the first minute, at five, 10 and 30.
Experts advise the application of high protection sunscreen every two hours since, in general, the amount normally used is not sufficient
"Already in this first phase we realized that the formula is stabilized and that photoprotection is homogeneous and stable at five minutes from its application," explain the drivers of the study.
However, scientists have transferred these early results to a study with volunteers, using tea The techniques of photography with emission of ultraviolet flash in specific areas of the back. "The conclusions were the same, and the absorption potential of the cream was stable from the same moment," explain the researchers.
They also recommend the application of sunscreen high protection every two hours, usually the amount that is normally used is not the equivalent of -2 milligrams per centimeter square of skin – and its distribution is not usually correct.
An application to find out how long it takes to burn the skin
Summer In the past, researchers from UMA María Victoria de Gálvez and José Aguilera, in collaboration with the Piel Sana Foundation of the Spanish Academy of Dermatology, have developed the application UV-DERMA, a mobile application that calculates time. After its success, with nearly 45,000 downloads, it will launch in late July a new version translated into all languages for use around the world.
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