Sunbed tanning... Does tanned skin mean damaged skin? Tanned skin signifies the bodies natural reaction by being exposed to ultra violet rays. During exposure to UV rays, melanin is activated and browns as it rises  to the surface of the skin as well as thickening the outer epidermis which is seen as a tannned skin. Remember that tanning can take as long as 4/5 days to develop so be patient, the last thing you want to do s over expose...