jesus

ROUGH START FOR OUR LORD JESUS

And there was delivered unto him [Jesus] the book of the prophet Esaias. And when he had opened the book, he found the place…

John 12:3 why would Mary wipe Jesus’ feet with her hair?

John 12:3 Mary then took a pound of very costly perfume of pure nard, and anointed the feet of Jesus and wiped His feet with her hair; and the house was filled with the fragrance of the perfume.

I understand the significance of Mary letting her hair down – Jewish women seldom ever did this. What I don’t get is why she used her hair to wipe his feet. Hair is not absorbent nor is it useful for wiping anything.
Why wouldn’t she use her dress or scarf?
QUESTION: Why hair and not the cloth of her dress, even her forearm would have been more useful for this task if a towel was not available.