Patch Test

• A patch test is vital before you use any hair dye product. A patch test will help you determine whether you will have an allergic reaction to the product. You can administer a patch test by mixing a very small amount of the hair dye product and applying it to your inner wrist or just behind your ear. Wait 10 to 20 minutes and then rinse product completely from your skin. You'll then watch for a reaction such as redness, itching, burning or irritation for up to 24 hours after the initial patch test. If you develop a reaction, do not use that hair dye product. VirtualHairCare.com suggests doing a patch test each time you use hair dye, whether you've used it before or not.
  
  

Sweet and Low

• Using Sweet and Low with your hair dye can counteract irritation or itchiness caused by an allergic reaction. Try adding one packet of Sweet and Low to your hair dye mixture and see whether that helps. You can use up to three packets without any effect on your hair dye. Sweet and low is a minimally invasive home treatment for some symptoms of hair dye allergies.
  
  

Henna and Other Natural Dye Products

• Henna, along with other natural dye products, can help relieve hair dye allergies. Typically, allergies from hair dye are caused by some of the chemicals within the hair dye. Using an all-natural product takes away the chemical reaction causing your hair dye allergy. No matter what type of natural dye product you choose to use, be sure to do a patch test with it.