Potent-C™ Niacinamide Discoloration Treatment.

"This one contains some brightening ingredients: kojic acid, resveratrol, tranexamic acid, alpha arbutin, and for vitamin C derivative it uses tetrahexyldecyl ascorbate, which is a great stable and oil soluble form of vitamin C if the pH is above five. Typically we want it for ascorbic acid low, but for this one if the pH is above five it appears to have the ability to absorb into skin and may have all the important abilities of pure ascorbic acid such as the antioxidant protection from UV rays, increasing collagen production in skin, and brightening benefits, although most of that is just from a small amount of research. So try it and see how your skin works with it."

"The Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment, which is their newest version, has niacinamide, tranexamic acid, and then arbutin, tetrapeptide, and azelaic acid and white mulberry. This one's going to be the most expensive, so if you're on a budget I would probably start with the most affordable one for you and work your way up. In general these are all great, and if you're looking for brightening of dark spots, sun spots, melasma, hyperpigmentation, post-inflammatory hyperpigmentation, anything like that, some of these are very good."

"The new Peter Thomas Roth Potent-C Niacinamide discoloration correction treatment just came to me last weekend and so far I'm enjoying it."

"For what this product promises, intensive brightening treatment to help improve the look of discoloration, dark spots, and post-acne marks, I would agree that it does help with everything it promises. It also offers some nice hydration and works well over ascorbic acid serums. [...] That being said, this one struggles to really fade my melasma much. [...] I find most brightening ingredients really don't touch it because it's just such a stubborn, strong form of hyperpigmentation. [...] If you have newer forms of hyperpigmentation, sunspots, or post-acne hyperpigmentation, this may help with that, but for very stubborn, long-lasting hyperpigmentation, it just maybe helped a little bit but it's never going away totally. [...] This is friendly for most skin types: sensitive skin, dry skin, oily skin."

"This one feels nice, it has no scent to it. It is on the expensive side, but so far I've tried I think everything from this line from Peter Thomas Roth, the serum, moisturizer, treatment, things like that, and I haven't been disappointed with any of them yet. I will say my skin does sting just a little bit, probably because of the combination, but because niacinamide can have a slight gentle exfoliating effect on skin."

"The Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment, they also have a discoloration treatment I think they still have it in the pink and silver bottle that one is really nice. The potency serum, the potency moisturizer, all really nice. They're a little bit more expensive than some of the other stuff but it's still worth trying if you don't mind spending a little bit more."

"I picked up the Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment and this one's multiple times the price. I wish I would have known Good Molecules was coming out with that before I picked this up because I think this was something like 60 bucks. It's got a lotion texture to it so you're going to want to apply it typically in your morning routine, but then apply a moisturizer and sunscreen over it. If you have oilier skin this might be moisturizing enough that you can get away without using a separate moisturizer."

"This is a water-based lotion for brightening skin up. It's got niacinamide, tranexamic acid, daimiethone, alpha arbutin, KA acid, resveratrol, and tetrahexyl ascorbate for brightening skin."

"The Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment has niacinamide, tranexamic acid, alpha arbutin, tetrahexyldecyl ascorbate which is a vitamin C derivative, kojic acid, and white mulberry extract. This one runs about $65, but I would check out their website because sometimes their website has better deals than you can find at other places."