In practice, retinol requires two conversion steps before it becomes active; Retinal (also called retinaldehyde) requires one; And prescription tretinoin already contains retinoic acid. This usually makes the tretinoin faster-acting and more powerful, but is also more likely to cause irritation. Once converted into its active form, retinol begins to work on multiple symptoms of
Published on July 17, 2026 10:50 am This article has been medically reviewed Dr. Ingrid Yang, MD. Social media may be a hotbed of health misinformation, but recent research suggests the platform may be particularly problematic when it comes to spreading sunscreen myths. Research study, published in PLoS Digital Healthanalyzed nearly 1,000 TikTok videos with
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Serums and treatments come next If you don’t already know, serums are where most of the targeted ingredients live. These formulas are concentrated and designed to address specific concerns like dehydration or dullness or uneven texture. The best serums usually contain ingredients like vitamin C, hyaluronic acidOr niacinamide, which requires direct contact with the skin
Men’s Journal aims to feature only the best products and services. If you buy something through one of our links, we may earn commission. When it comes to sun protection, most people think about protecting their skin from the sun by applying sunscreen before going to the beach, pool or hiking trail. But protecting your
Collagen has gained popularity in recent years as a promising supplement, with experts claiming it can improve our appearance, strength, and recovery. But a huge new review points out the advantages and less obvious benefits of using collagen. Here’s what you need to know. New review analyzes 113 clinical trials on collagen supplements huge new