A chemical ingredient used in some hair relaxing and/or straigtening products that is designed to break the protein bonds that provide human hair with its natural texture. Ammonium Thioglycolate is often called "thio". It is the active chemical ingredient that is also found in chemical waving treatments.
Daily Hair Tip
Know your hair type and be realistic about what hair styles work best with it. Don't agree to a new hair style that you know in your heart will be impossible to duplicate at home.