STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Facial scrub particles, SEM. Coloured scanning electron micrograph (SEM) of particles found within consumer facial scrub lotion. The large flakes are silica particles that measure only a few micrometres in width each. The flakes act as exfoliating agents to remove dead skin cells when applied to the body.
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