Get Incredibly Soft And Smooth Skin Using Vaseline. At that time, a young 22-year-old American chemist named Robert Chesebrough travelled from Brooklyn, New York to Pennsylvania, chasing the petroleum dream. He discovered at the oil mine, there was always a layer of thick substance accumulated on the head of the oil drill, reducing the smoothness of the running engine and workers needed to spend time to clean. He took a bit of the substance and brought it home for experiment. He found a way to purify the s
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