Facial primer is the secret weapon of makeup artists, migrating from the catwalks to women’s cosmetic bags. Makeup gurus don’t start makeup on the face, lips, eyes, or even eyelashes without a thin layer of foundation, which they claim “changes everything”: it makes the application process easier, improves the appearance of makeup on the face, and even saves on other makeup products.Although primers came into use back in the last century – their creator is said to be makeup artist and founder of the Laura Mercier brand Laura Mercier – many still do not use them in daily makeup. But in vain they make life much easier.