Answered by Ustadh Tabraze Azam.
Question: Is dyeing beard and hair with henna a sunnah?
I pray that you are in the best of health and faith, insha’Allah.
Yes, it is a recommended sunna for men to dye their hair and beard as it is established from the practice of the Companions (May Allah be pleased with them.) [al-Haskafi, al-Durr al-Mukhtar]
Please see: The Fiqh of Hair Dyes
And Allah alone gives success.
Checked & Approved by Shaykh Faraz Rabbani.