Table 1: Minimal erythemal dose (MED) for different skin types using the Fitzpatrick scale (20)
TypeSkin colourMED, J/m2Description
IWhite or very pale200Always burns, never tans
IIPale white with beige tint250Always burns, sometimes tans
IIIBeige to light brown (olive)300Sometimes burns, always tans
IVLight to moderate brown450Rarely burns, always tans
VMedium to dark brown600Rarely burns, tans more than average
VIDark brown to black 1000Never burns