I bought this excitedly today anticipating the effects it'd have on my light undereye circles. I put it on and waited several hours before I looked in the mirror. I noticed that my undereye circles were suddenly more pronounced. (To be clear--I wasn't anticipating immediate results but was checking for any sort of reaction.) So I went online and read a few more reviews. I must have not been paying close attention before, as I did not see all the reviews noting increased redness and allergic reactions. I went immediately and rubbed it off. My skin has a slight redness but no itching or bumps. The area around my eyes looks very sensitive, as though I've been crying and rubbing the sensitive skin around my eye.I am returning this tomorrow to the local organic grocery store and purchasing Vitamin K capsules instead. Too weary of this product; I will not try this again.