The Fitzpatrick skin type depends on the amount of melanin pigment in the skin. This is determined by constitutional color (white, brown or black skin) and the result of exposure to ultraviolet radiation (tanning). Pale or white skin burns easily and tans slowly and poorly: it needs more protection against sun exposure. Darker skin burns less and tans more easily. It is also more prone to develop post-inflammatory-pigmentation after injury (brown marks).