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
In a Clairol Professional survey 33% of the respondents reported that they preferred to have their hair colored in a salon rather than risk doing damage at home. 50% of the participants said they liked their colorists best because of friendliness while only 38% valued good advice about haircolor or the fact that the colorist kept up on the latest trends.