Text this: Natural dyeing of wool and hair with indigo carmine (C.I. Natural Blue 2), a renewable resource based blue dye

  ______   __   __   _    _      ___     _____    
 /_   _//  \ \\/ // | |  | ||   / _ \\  |  __ \\  
   | ||     \ ` //  | |/\| ||  / //\ \\ | |  \ || 
  _| ||      | ||   |  /\  || |  ___  ||| |__/ || 
 /__//       |_||   |_// \_|| |_||  |_|||_____//  
 `--`        `-`'   `-`   `-` `-`   `-`  -----`