The 1990 recommendations of the International Commission of Radiation Protection introduced the quantity ‘effective dose’ to replace ‘effective dose equivalent’. The recommendations also included the skin in the computation for the first time. A tissue weighting factor of 0.01 was recommended for the skin.
This document reviews the biological basis for dose limitation in the skin and recommends a practical approach to the calculation of doses for a variety of exposure situations, including those involving partial exposure. The depth at which the skin dose should be evaluated is also addressed.