"What SPF Means
SPF stands for Sun Protection Factor. It's a number that you can use to help determine how long you can stay in the sun before getting a sunburn. Since sunburns are caused by UV-B radiation, SPF does not indicate protection from UV-A, which can cause cancer and premature aging of the skin.
Your skin has a natural SPF, partially determined by how much melanin you have, or how darkly pigmented your skin is. The SPF is a multiplication factor. If you can stay out in the sun 15 minutes before burning, using a sunscreen with an SPF of 10 would allow you to resist the burn for 10x longer or 150 minutes.
Although the SPF only applies to UV-B, the labels of most products indicate if they offer broad spectrum protection, which is some indication of whether or not they work against UV-A radiation. The particles in sunblock reflect both UV-A and UV-B."
In:About Education
Para ter uma ferias sem percalços, ter em atenção o protector solar escolhido. Verificar se atua sobre os UV-A , ou então , dar preferência aos bloqueadores solares (ecran total) para uma protecção eficaz, especialmente nas crianças.
Notar que os efeitos dos danos dos ultravioletas são cumulativos, logo, os problemas na pele podem surgir tardiamente.
Ferias felizes, mas cuidando do nosso precioso organismo...
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