You've been there — standing in the skincare aisle, scanning rows of products labeled "retinol," "retinoid" and "retinaldehyde," trying to figure out what the difference actually is. These terms sound ...

But the biggest knock on the beloved ingredient is that some people just can’t tolerate it, and for many others, there is an adjustment period during which your skin becomes dry and irritated. If you ...

Retinaldehyde, an intermediate metabolite between vitamin A and retinoic acid, is present at biologically active concentrations in fat tissue, where it antagonizes PPAR-γ activity, inhibiting ...

Please provide your email address to receive an email when new articles are posted on . Visibility of fine lines on the face and chest decreased by 12% and 19% at week 8. Hyperpigmentation, visible ...

Every product on this page was chosen by a Harper's BAZAAR editor. We may earn commission on some of the items you choose to buy. Retinol is a derivative of vitamin A, which also includes retinal (or ...

The skincare benefits of retinol are numerous and well-known. From smoothing out fine lines to treating acne, it's a powerhouse ingredient for your skin. But with every benefit comes a downside, and ...

If you've ever stood in a skincare aisle staring at products labeled "retinol," "retinoid" or "retinaldehyde," wondering what the difference actually is, you're in good company. These terms sound ...