They also have the potential to be expensive, especially in over-the-counter preparations. However, according to Dr. Ariel ...

Adapalene (the active ingredient in Differin) is the first retinoid approved for over-the-counter use and is now widely ...

However, according to Dr. Ariel Ostad, a cosmetic surgeon based in New York City, products that use a prescription-strength retinoid called adapalene are outliers in this pricey OTC mark-up.

People who have used prescription-strength Tretinoin say the over-the-counter cream has given them the same results they had ...

Retinoids are milder, over-the-counter versions of tretinoin (or vitamin A). At prescription strengths, tretinoin has been shown to speed up skin’s cellular turnover, boost collagen, and ...

Consistency is key when using retinol, because it could take several weeks before you start seeing noticeable results.

People build their skin-care routines around their beloved tretinoin (the common prescription retinoid), swapping tips for the dreaded adjustment period (moisturizer first, for slower absorption ...

We'll unpack the different roles of the retinoid family later in the piece, but for now, let's focus on retinol itself. "It’s one of the most well-studied ingredients in dermatology and skincare, ...