I would assume it is meant as a symbol of the purity and innocence of childhood, or the past.
The Ghost of Christmas Past
In Charles Dickens' "A Christmas Carol," the Ghost of Christmas Past is usually depicted as a radiant figure, but no specific height is mentioned. The ghost is described as having long white hair and wearing a white tunic with a glowing light emanating from it.
An indonesian ghost called kuntilanak It has long hair and a white face
scariest ghost is called 처녀귀신 in korean, and its a she, and she has long, straight black hair and a bloody face, a white gown.
Having a single long white hair on the face can symbolize wisdom, maturity, or a unique trait. It may also be seen as a sign of aging or experience.
Black or white Its said that Zues had black hair, but its possible he has grey hair.
The Ghost of Christmas Present is a plump, tall, joyful man who carries a torch with him. He is supposed to represent how Christmas is a time of goodness and cheer. When he sprinkles ashes from his torch onto people, they immediately become happy and cheerful. The Ghost of Christmas Past shows how Christmas is a time when everybody gets together and becomes thankful for each other; that they still are alive and that they have a happy life with a good family and money in their pockets.
Sam eleiot from ghost rider.....long white hair....deep voice....
A single long white hair on the back of an individual can symbolize wisdom, experience, or aging. It may also be seen as a unique trait that sets the individual apart from others.
In the book, Dickens descrbes the ghost of Christmas past as having a child-like face, but an old persons long white hair. It looks androgynous (not certainly male or female), and is referred to simply as 'it'. The ghost has very muscular arms and hands, but very delicate pretty legs. in one hand it is holding a holly (a symbol of Christmas time), but its long white dress is trimmed with summer flowers. It is bare footed and has a bright, candle-like beam of light coming out of its head ,and a hat under its arm so it can shut off the light when needed. It has flushed cheeks like a little child, also.
Having a single long white hair on your forehead could symbolize wisdom, uniqueness, or a significant life event. It may also be seen as a sign of aging or maturity.
As no specific ghost is referred to here then; The Ghost of Christmas Past takes Scrooge to; The streets of London at Christmas Ghost of Christmas Present Bob Cratchit's home The Ghost of Christmas Yet to come Old Joes ' beetling shop