My first arousal from long hair came at the age of, I think, three. It is one of my earliest memories.
We had a next door neighbor who had graying, straight black hair, I guess to mid-thigh length. She usually wore it up, but her husband asked her to air-dry it outdoors in the back yard when she washed it. Jeez, it was beautiful.
Our families were on very good terms, and she was always really nice to me.
Can you say "early imprinting"? I don't know if this was what did it, or if I was genetically programmed even earlier, but I've been incorrigible ever since.