- "Cold wave" is a term used for an alkaline wave.
This type of perm does not require any added heat to process. What is a concave rod in cosmetology?
Concave rods: most common type; smaller center diameter; produces tighter curl in center/larger curl on sides of hair parting; used for definite wave pattern close to head. vi.
Straight rods: uniform diameter along length; produces consistently sized wave in hair parting..
What is ATG in cosmetology?
ammonium thioglycolate (ATG) Active ingredient or reducing agent in alkaline permanents. base control.
Position of the tool in relation to its base section, determinded by the angle at which the hair is wrapped..
What is base section cosmetology?
wrapping pattern and the type and size of the rod being used.
Base sections are subsections of panels into which the hair is divided for perm wrapping; one rod is normally placed on each base section (Figure 20-19).
The size of each base section is usually the length and width of the rod being used..
Why study chemical texture services?
Cosmetologists should study and have a thorough understanding of chemical texture services because: Knowing how to perform these services accurately, safely, and professionally will help build a trusting and loyal clientele.
Knowledge builds confidence, to offer chemical texture services to all clients..
- In alkaline (cold) waves, the perm solution chemically breaks, or reduces, the strong disulfide bonds while the hair is wrapped on the perm tools.
With acid (heat) waves, heat tension, and the perm solution break the disulfide bonds.
