Grate the Ginger. Start by grating the ginger root to a fine pulp. For best results, use a micro grater or a fine mesh strainer to extract as much ginger juice as possible. You won’t want this to be too chunky as it has to wash down your shower drain.
Combine All Ingredients. In a clean bowl, stir together the ginger juice, apple cider vinegar, liquid castile soap, and water. Mix gently until well combined. Aim to use the mixture shortly after preparing it to maximize the potency of the fresh ginger.
Apply to Hair and Scalp. Wet your hair thoroughly. Then, take a small amount of the ginger mixture at a time and massage it into your scalp. Work it through from roots to ends, making sure every part of your hair gets a good coating.
Let It Work. Leave the shampoo on for a few minutes. This gives the ingredients time to clarify and cleanse your hair, dissolving dirt, oils, and leftover product residue.
Rinse Thoroughly. Rinse your hair with warm water. You may need to rinse a few times to ensure all the ginger is removed. Any ginger pieces left behind could make your scalp feel gritty, so be sure to rinse completely.
Follow with Your Usual Routine. After the rinse, follow with your regular shampoo and conditioner routine (if desired) for extra hydration and manageability.