Beauty Q&A: What Does Mascara Primer Do?

December 27, 2021
Marisa Petrarca
By: Marisa Petrarca | Makeup.com by L'Oréal
How to Use Mascara Primer
In the hope of getting the longest, most voluminous lashes possible, you’ve likely tried every mascara, lash serum and set of falsies out there. But there’s one lash-boosting category you may not have experimented with: mascara primer. To find out if eyelash primers are the secret your beauty routine has been missing, we turned to makeup artist Andrew Velázquez.

What Does Mascara Primer Do?

"The objective of a mascara primer is to provide real lash hairs with keratin or to work with mascara to avoid clumping, separate the lashes, increase volume and lengthen,” says Velazquez. “Some primers might even make mascara waterproof, depending on the formula."

How to Apply Your Mascara Primer Correctly

While you can apply primer with an eyelash spoolie, it’s best to use the wand that comes with the product. “The brush is already meant to work synergistically with the formula,” says Velazquez. “For application, I would recommend lifting your chin up and using a compact to look down so the lashes stick straight out.” Then, as you’re applying the product, round the brush into the lash to help curl and separate each hair. Make sure the primer is completely dry before applying your mascara on top. We recommend waiting at least 30 seconds after your prime to go in with mascara.


Our Favorite Mascara Primers

Photo: Chaunte Vaughn, Design: Juliana Campisi

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