What is the primary reducing agent in true acid waves?

The primary reducing agent in true acid waves is glyceryl monothioglycolate (GMTG). This compound functions effectively in perming solutions, allowing for the breaking and reforming of disulfide bonds in the hair structure. During the curling process, GMTG penetrates the hair cuticle and provides a gentler, more controlled wave formation compared to more harsh reducing agents.

In true acid waves, GMTG is particularly valuable because it is designed to work at a lower pH, making the waving process less damaging and more suitable for various hair types. This characteristic of GMTG contributes to a more natural and long-lasting curl compared to alternatives that may not have the same level of gentleness or efficacy.

Other compounds like cysteine, ammonium thioglycolate, and hydrogen peroxide have different roles or applications in hair treatments. Cysteine is an amino acid that can be utilized in some perming processes but is not the primary reducing agent in true acid waves. Ammonium thioglycolate is more commonly associated with alkaline waves, which operate differently from true acid waves. Hydrogen peroxide is an oxidizing agent typically used in hair bleaching and coloring, not in the reducing process of curling hair. Thus, the context and application