Finacea.

"I find that you get great results using these prescribed skincare. [...] If you look at the ingredient list [...] of Finacea, the active ingredient is azelaic acid at the top of the ingredient list, so it's right there. When you look at other products, there's other emollients, other humectants, water, all of that sort of stuff in that formulation that means azelaic acid is a lot lower down. Finacea is almost like a gel-like preparation that's got good absorption levels into the skin, and you're getting more active ingredients delivered where you need it most, whereas other formulations feel a little bit nicer but have other products mixed in."

"I really think Finacea should be an over the counter medication. It's an effective skin lightening ingredient, you don't have the risk of ochronosis like you do with hydroquinone, and while it can be irritating it's generally pretty well tolerated. You don't get rebound worsening of hyperpigmentation, you can use it all over your face, it's not going to bleach the surrounding skin, it's naturally present on your skin unlike hydroquinone, and it's safe to use in pregnancy. It's been shown in clinical trials to be as effective as hydroquinone for melasma, and it's also good for treating acne and rosacea. Finacea at the prescription strength is an equally if not more compelling ingredient than even Differin for being available over the counter."