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
1 The cause of IC/BPS is unknown
2200mg glutathione, barley, collagen, moringa, and superfruit support formula
10.1016/S0076-6879(05)01028-1 Methods Enzymol
PMID: 145 ZhangJZhangHZhouWJiangMLinX