Unlike traditional organic dyes, new inorganic pigments are resistant to light and chemical exposure, but do not contain toxic metals. Scientists painted the white nanoparticles of hydroxyapatitis with iron ions and formed tones to saturated red from pale pink. Color adjustable.
The development turned out to be affordable and cheap: a simple portable colorimeter was used to measure the color, not expensive laboratory equipment. Based on pigments, scientists have formed a trial lip balm, which gives scientists a red tone to the skin, protected against ultraviolet radiation and did not contribute to the reproduction of bacteria.
Source: Ferra
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