Tretinoin, a prescription vitamin A derivative, has been called the most potent and certainly the most widely investigated retinoid for photoaging therapy by researchers in a 2006 review.49 And a more recent 2022 review notes that studies on tretinoin consistently find it to be efficacious in improving [the] clinical appearance of photoaging.50 And many nonprescription ingredients, like niacinamide (for melasma),51 vitamin C (for wrinkles),52 and hyaluronic acid (for dry skin), have demonstrated positive outcomes in studies.53 Some of our favorite online dermatology options that weve reviewed are Curology, Agency, Prose, and Musely
This research material is provided for analytical, scientific and in vitro laboratory investigation
Validated questionnaires and performance assessments were administered at three time points: baseline (Day 0), Day 30, and Day 60 of supplementation
I am also quite fascinated by many of these substances, as some of them really seem to work based on all the body hackers that are experimenting daily and sharing their experiences