Vitamin C Vitamin E Ferulic Acid 16% Serum.

"Very interesting formula. It's actually very simple formula. It's non-irritating. However, the directions are wrong on this product. The directions say you can use it AM and PM. That's a mistake. Ferulic acid is an acid and it exfoliates the skin. So you certainly do not want to be doing this morning and night. This is a PM product because the ferulic acid only very lightly penetrates easily into the skin. It's got the classic kind of chemical smell, you know, it's because it's a fragrance-free brand and I love it. I would say this is definitely a derm-approved product."

"This is a vitamin C, E, ferulic, and that's a formula you should all know because that is the staple, tried and true formulation for vitamin C for dark spots and tone, an amazing antioxidant. So this has ethyl ascorbic acid as the form of vitamin C. Ethyl ascorbic acid makes it more stable, adds more skin neutral pH, has improved absorption, and it still has clinical benefits. It's more studied than a lot of the other vitamin C alternative derivatives. So if you're looking for a vitamin C product that may be more gentle on your skin still with good benefits and a great price point, this one is outstanding. I would venture to say that ethyl ascorbic acid is probably a better ingredient than L-ascorbic acid for the skin. L-ascorbic acid is the pure form, so it's the one that's actually doing the active activity, but it's got absorption issues. You have to formulate at very low pH, which is very uncomfortable for the skin. It can be pro-inflammatory in some cases. Whereas ethyl ascorbic acid is able to get in the skin, convert to L-ascorbic acid, and actually deliver similar results."