Removing white deodorant stains is a process that takes a varying amount of time depending on the severity of the stains. You need a bottle of liquid stain remover, liquid clothing detergent, a washing machine, white vinegar, water and denatured alcohol.
Apply the stain remover to the fabric
Take your bottle of liquid stain remover and pour some directly onto the deodorant stain. Read the label on your specific brand of stain remover to make sure you allow it to soak for the appropriate amount of time.
Wash the fabric normally
Adjust your washing machine settings so they are prepared for a normal wash cycle. Run your fabric through a full cycle and then remove the fabric. If the stain is still visible, you need to apply white vinegar and denatured alcohol. If the stain is gone, you may dry the fabric regularly.
Apply white vinegar if necessary
Rinse the fabric in cool water thoroughly. Hold the fabric over a sink and flush the deodorant stain with white vinegar for several minutes. Rinse the fabric in fresh water until the vinegar is gone.
Apply denatured alcohol if necessary
Pour some denatured alcohol onto the deodorant stain and allow it to flow through the fabric. Repeat this process several times. Once the stain is no longer visible, rinse the fabric out with cold water and allow it to dry normally.