“As skin matures, it naturally loses moisture, collagen, and elasticity, making it more prone to dryness, fine lines, and uneven texture,” Walmsley says. Niacinamide to improve skin texture, brighten the complexion, and help support the skin barrier. to improve skin texture, brighten the complexion, and help support the skin barrier. Too much makeup primer can cause foundation or concealer to pill, slide, or separate throughout the day.” How we testedWhile evaluating the best primers for older skin, Glamour editors and contributors sampled a range of formulas, reporting back on the face primer’s ingredients, texture, and efficacy in making skin and makeup look smooth and fresh.