What does alkaline permanent waving solution do?
Alkaline permanent waving solutions soften and swell the hair, opening cuticle and permitting solution to penetrate into cortex.
What are the 3 components of exothermic waves?
Chapter 20 Chemical Texture Services (Book #3)
| A | B |
|---|---|
| Which of these is NOT one of the three main components of an exothermic wave? | concentrator |
| A _____ uses an endothermic process. | low-pH wave |
| Which type of perm is recommended for very damaged hair? | true acid wave |
| What is the most common neutralizer? | hydrogen peroxide |
What waves are perms using an ingredient that does not evaporate as readily as ammonia?
Chemical Texture Services
| A | B |
|---|---|
| ammonia-free waves | perms that use an ingredient that does not evaporate as readily as ammonia, so there is very little odor associated with their use |
| ammonium thiglycolate (ATG) | main active ingredient or reducing agent in alkaline permanents |
Which bonds are breaking during the changing of the natural wave pattern of the hair?
Cards In This Set
| Front | Back |
|---|---|
| A strong compact cuticle makes for | Resistant hair |
| Porous, damaged, or chemically treated hair requires a perm solution that is | Less alkaline |
| Changing the natural wave pattern of the hair is made possible breaking | Side bonds |
| Of the three types of side bonds, disulfide bonds are the | Strongest |
What makes an alkaline wave different from a true acid wave?
-True acid waves have a pH between 4.5 and 7.0 and require heat to process; they process more slowly than alkaline waves, and they do not usually produce as firm a curl as alkaline waves. GMTG, which has a low pH, is the active ingredient. Why do permanent waves need to be neutralized?
What is the benefit of wrapping long hair in a piggyback wrap?
The hair is wrapped on one rod from the scalp to mid shaft, and another is used to wrap the remainder hair strand in the same direction. What is a double-rod or piggyback wrap? It allows for better penetration of the processing solution and for a tighter curl near the scalp.
What are acid balanced waves?
acid- balanced waves. permanent waves that have a 7.0 or neutral ph because of their higher ph, they process at room temp. do not requrie added heat of hair dryer, process more quickly and produce firmer curls then true acid waves.
What is the pH in ammonia free waves?
Developed in 1941, have a pH between 9.0 and 9.6, use ammonium thioglycolate (ATG) as the reducing agent, and process at room temperature without addition of heat.
What is ammonia free waves?
Ammonia-free waves. Perms that use an ingredient that does not evaporate as readily as ammonia, so there is very little odor associated with their use. Ammonium Thioglycolate (ATG) Active ingredient or reducing agent in alkaline permanents.
What is the main active ingredient or reducing agent in alkaline perms?
PERMANENT WAVE
| A | B |
|---|---|
| Ammonium Thioglycolate | The main active ingredient of reducing agent in alkaline perms. |
| Exothermic | The perm is activated by heat created chemically within the product. |
| Endothermic | The perm is activated by an outside heat source, usually a conventional hood-type hair dryer. |
What is the difference between end bonds and side bonds?
Side bonds: made in the cortex of millions of polypeptide chains crossed linked by 3 types: salt, hydrogen, disulfide. they are responsible for the elastictity and incredible strength of the hair. End bonds: link amino acids together end to end in long chains, like beads, to form polypeptide chains.