He, sallallaahu ‘alayhi wa sallam, would let one of his wives comb his hair and wash it:

It is evident from the biography of the Prophet of Allah, sallallaahu ‘alayhi wa sallam, that he attached great importance to different  aspects of keeping a neat appearance and cleanliness. He, sallallaahu ‘alayhi wa sallam, encouraged his Nation to do so as well so that people maintain themselves in the best form and the best appearance.