What does makeup foundation primer do?

Makeup foundation primer creates a smooth, flawless base that helps foundation stay put. Primer contains silicone, which fills in fine lines and flaws to create a smooth finish that looks youthful and perfect. Primers also hide uneven skin tone and age spots.

Wearing a layer of primer under makeup extends the life of the makeup and helps prevent creases in eye shadow and foundation. Primer also prevents shininess caused by oily skin and flakiness caused by dry skin. Foundation primers are available to suit all skin types. They can be transparent or tinted, and may contain moisturizers or other nutrients to promote healthy skin.