Senior Cosmetology Practice Test

In the context of hair treatments, ATG stands for Ammonium Thioglycolate. This chemical is commonly used in the formulation of permanent wave solutions and relaxers. It is a key ingredient because it effectively breaks down the disulfide bonds in the hair, allowing for the reshaping of hair texture.

Ammonium Thioglycolate works in an alkaline environment, which helps to soften and expand the hair's cuticle, making it easier to manipulate. This property makes it particularly effective in perming and relaxing treatments. The formulation is pH balanced, generally ranging around 8 to 9, which enhances its ability to alter the hair structure for long-lasting results.

Understanding the role of Ammonium Thioglycolate is crucial for cosmetologists when selecting the right product for hair treatments, as it directly influences the outcome based on the hair type and desired style.