The objective of this thesis was to resolve how very high frequencies (6-100 GHz) affect the absorption of electromagnetic waves in human face. In addition to the frequency range, the effect of vertical versus horizontal polarisation was taken into account. The model used in the simulations has smaller voxel size (100 microm) than any other model used in this kind of simulations. The calculations were done with FDTD method using Yee's algorithm and the resulting data gives each voxel a power density value which is interpolated in a multitude of ways to express the results in a meaningful way. The main outcome in this thesis was that the absorbed power density can be greater than the incident power density due to refections and the effect of polarisation can be threefold in these results.