Exercising with a face full of makeup may harm the health of the skin, not help it. Researchers from Texas applied face cream to the forehead and under-eye areas of 43 university students.
Moisture levels on the makeup side were higher than those on the bare side. People's pores were also smaller in the areas where they wore makeup, indicating that the skin wasn't able to open up and regulate moisture and remove oil and debris as it normally does, says Suho Lee, senior author of the study.