If your goal is glowing, youthful skin, dermatologists agree that hyaluronic acid has many benefits for skin, including deep hydration. Learn more about the science behind this powerful ingredient, how it can transform your complexion, and how to use it.
Yes, sunscreen does expire. But how can you tell and what happens if you use it? We asked experts to weigh in on how to tell if you sunscreen is expired and the best time to replace it, so you'll always be protected.
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