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      Investigation of jewelry powders radiating far-infrared rays and the biological effects on human skin.

      Journal of cosmetic science
      Adult, Female, Humans, Infrared Rays, Male, Microscopy, Electron, Scanning, Powders, Reference Values, Skin, radiation effects

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          Abstract

          Far-infrared rays have certain kinds of effects on the human body, especially on skin, blood circulation, and skin cell vitalizing. Some jewelry powders radiate far-infrared rays. Jade has powerful far-infrared ray radiation, and tourmaline has pyroelectric and piezoelectric properties and radiated far-infrared rays. The jewelry powders (fine powdered jade and tourmaline powders) were screened by far-infrared rays for radiation properties and tested for the effects of far-infrared rays on the human skin by temperature observation using an infrared thermal analyzer.

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