Tretinoin 0.025%, 0.05%, 0.1%. Not for use in eczema or sunburned skin. Avoid eyes, mouth, angles of nose, mucous membranes, sun, UV light. Discontinue if sensitivity reactions occur. Increased ...

Products are independently selected by our editors. We may earn an affiliate commission from links. They always say, the best retinol serum is one you’ll actually use. (That’s actually the ...

Before Retin-A was approved by the FDA in 1971, it had been tested on hundreds of incarcerated people in Philadelphia as part of a long-running program led by dermatologist Albert Kligman.