Violet-C Brightening Serum.

"I love it, I absolutely love this formula. [...] This is the Violet-C Brightening Serum by Tatcha, and it's a vitamin C derivative formulation. [...] If you're someone that has sensitive skin and you can't use L-ascorbic acid, the purest form of vitamin C, then this would be a great option to look into because vitamin C derivatives in general [...] are more gentle on the skin. They may take longer to see results, but consistency is key. [...] This one works pretty much right away from my experience with it, and it's probably because of the additional ingredients in here. The vitamin C derivative that is in here is ascorbyl tetraisopalmitate, which is going to brighten and help target fine lines and wrinkles and protect the skin from everyday pollution. There's also a lot of different fruit AHAs in here, which are more gentle, they're not glycolic and lactic acid."