Vitamin K Retinal 0.1% Eye Cream.

"They've got caffeine in it, caffeine has limited efficacy but you tend to put it into an eye cream. It's also got retinal and peptides but at low percentages which I would expect as well. So this product is going to be good for fine lines but not very good for dark circles. [...] When they did the clinical studies that said 19% saw a reduction after 8 weeks, I'm not surprised at such a low number because honestly when it comes to dark circles in skin of color you need high strength tyrosine inhibitors and high percentages in combination, a cocktail of them, and there's not really enough in this product to be honest to see much difference in your dark circles. You're going to see a little bit mainly because the humectant factors of the glycerin water will separate those skin cells so light reflects more easily but it's not going to do much about the hyperactive melanocyte which is spitting out excess melanin under the skin. That's a safe product, no D alcohol, no fragrance, no essential oils so I do like it. I would prefer it if it was in an airless pump because antioxidants tend to have higher efficacy when there's no oxygen around the ingredients but for the price it is worth it. It is something I would recommend."