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Articles in Ultraviolet rays

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How many levels of PA index are there in sunscreen? What does the PA index mean?
The PA index is one of the indexes that shows the level of UV protection of sunscreen. Choosing a suitable sunscreen helps protect the skin from the harmful effects of UV rays.
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Instructions for using infrared lamps at home
Infrared light therapy is applied in the treatment of various health conditions such as back pain, arthritis, bursitis, severe trauma, muscle strain, carpal tunnel syndrome, neck pain, back pain,...
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Cardiology Pediatrics Orthopedics