The best primer for an elf depends on what your skin type is and what you're looking to achieve with your makeup. For a dewy, natural-looking glow, I recommend a primer with light coverage like the ELF Illuminating Primer. It contains light-reflecting particles that give your skin a subtle luminosity while also helping your makeup go on smoothly. For a more matte finish, I would recommend the ELF Mattifying Primer. It helps control oil and minimize the appearance of pores, leaving your skin looking flawless and shine-free.