“His head, and his haires were white like wooll as white as snow, and his eyes were as a flame of fire,”
1611 King James Version (KJV)
1:14 His head and his hair - That is, the hair of his head, not his whole head. Were white as white wool - Like the Ancient of Days, represented in Daniel's vision, #Dan 7:9|. Wool is commonly supposed to be an emblem of eternity. As snow - Betokening his spotless purity. And his eyes as a flame of fire - Piercing through all things; a token of his omniscience.
Re 1:14 His head and [his] hairs [were] white. White is the color of purity and of triumph. The idea here is not age but heavenly glory. His eyes [were] as a flame of fire. Bright, piercing, all seeing, flashing light, and also a consuming fire of the wicked.