The hair — This circumstance, though in itself inconsiderable, is noted as a sign of the recovery of God's favour, and his former strength, in some degree, upon his repentance, and renewing his vow with God, which was allowed for Nazarites to do.
Related Commentaries of Judges 16:22
Judges 16:22
22 Howbeit the hair of his head began to grow again afteri he was shaven.