Tattoo is an implementation with needle-like devices, where pigment cells that gives color to the dermis layer of skin is being applied. It’s possible that during the tattoo process skin injuries can occur and permanent skin stains can remain. In long terms these scars can trigger a number of mechanisms that can lead to uncontrolled cell divisions on the skin. The content of the dyes used in tattooing may cause a number of early and late phase reactions. In the first phases some reactions can happen, especially red paint can cause allergic reactions. After the later phases some paints that trigger these uncontrolled skin divisions can even cause carcinogenic features. Sometimes our skin show reactions to these body paints, when it is not used to it.

Dark discoloration on the skin can be naturally. It also can occur later in life as sun stains, age stains, pregnancy stains, acne stains, freckles, stains that are formed after any injury, benign or malignant skin tumor. The diagnosis of stains before stain treatment planning must be done correctly. Stains should be evaluated by a dermatologist.