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May 11, 2022

Test Lip-Stick on Guinea Pig, 1939

In the photo below, Max Factor, Hollywood make-up specialist (left) and Dr. J. R. Pratt, chemist, were testing a new lipstick on a shaven guinea pig (circle) in 1939. A baby guinea pig was used for the test because its under skin is ten times more sensitive than that of a human being.





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