Blondes

My three sister and I all have blonde hair with some red mixed in to some degree. I am the oldest and the only gray I have is just above my ears and that is white so it looks blonde.No. one sister and the no two sister are not gray.
My youngest sister has bleached her hair golden blonde for years two years ago she decided that she would let it go to her natural color which was near my color. She said her hair got out too about 1/2 inch long all over her head and she looked in the looking glass and discovered a cap of gray hair. She told me she went to the beauty shop and had it bleached again and has keep it up.
So the only sister to have gray hair is the youngest and you will never see it unless they stop manufacturing Bleach.