Now please, do not put words into my mouth. I did not claim anything like that. I simply stated that using magic or alchemy as an excuse is a lazy explanation. It’s just like “quantum” in modern scifi. There are all sorts of things that could be explained with magic that don’t exist in the game, and there are things which could be explained with magic that do exist in the game but which I don’t like.

Magic in the Hyborian Age is a grim business that involves human sacrifice and corrupting the magic-user’s very soul. Illusions to make a thoroughly corrupted individual to look like a normal person fit the theme of the setting because sorcerers may not want to broadcast their villainy to everyone - but making one’s hair purple, green or pink sounds like excessive vanity.