Under-eye bruising is a fairly common phenomenon of the gradual loss of elasticity of the delicate skin under the eyes, which millions of people around the world are constantly struggling with. In most cases, it is the result of an inadequate lifestyle, exhaustion and excess stress, while for some it is simply an individual feature of appearance. Sometimes dark circles under the eyes can turn out to be a symptom of a number of diseases that are dangerous to our health, so it is worth keeping an eye on our body. The problem of dark circles under the eyes can be dealt with by using brightening creams, camouflaging discolouration with make-up or treatments to brighten the eye area, such as facial rejuvenation.