The Prophet ﷺ never dyed his hair. There was only a little whiteness at the front of his beard and in the hair beneath his lower lip, and on his head just a few scattered strands that could hardly be seen. Muthanna added, "and at the temples."
قال أبي حدثناه علي بن إسحاق أخبرنا عبد الله أخبرنا المثنى عن قتادة فذكر مثله