It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) never applied dye. There were a few white hairs in the front part of his beard, above the chin, on his head, and at his temples, which were not very noticeable. However, Hazrat Abu Bakr Siddiq (may Allah be pleased with him) used to apply henna dye.