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How to apply foundation on oily skin 
Look for a foundation that matches your skin tone. 
Before you apply foundation, you should make sure it matches your skin tone. Always test foundation in natural light, rather than in store lighting, so you can be sure it is a perfect match.
You should also test the shade on the side of your face, between your nose and the side of your cheek. Try to test three samples of foundation that range from lighter to darker shades.