To develop the natural brown hair-dye, we investigated the dyeability of hairs dyed with the extracts of Boehmeria tricuspis and chemical hair-dye and the changes in its colors as affected by the number of washing frequencies. When dyed with the extracts of Boehmeria tricuspis, ${Delta}E$ values was increased over 11 compared with control and dyed an order of descent YR. ${Delta}E$ values treated the ashing juice of Japanese cleyera with a mordant was mostly increased about 15.52. Hairs was dyed with the extracts of Boehmeria tricuspis and we investigated L, a, b and ${Delta}E$ values as affected by the number of washing frequencies. When treated the ashing juice of Japanese cleyera with a mordant, L values was mostly decreased, however, a, b and ${Delta}E$ values was increased significantly. L values of hairs dyed with the extracts of Boehmeria tricuspis and washed over thirty times became low compared with that dyed with chemical hair-dye and changes in a, b and ${Delta}E$values of that was small.