Thank you for coming to Just Answers with your health question. Being a color tech and hair stylist is how I paid my way through school for natural med. In all my years of coloring hair I have never heard of using sweet and low to offset allergic reactions,but every stylist has her secrets . In the mean time to help aid in the healing and soothe the itching I recommend you go to a natural health food store in your area and pick up an Oatmeal Lotion,this will speed the healing process and relieve the itch.
Have a great day!