| A | B |
|---|
| Overprocessing | Hair is very curly when wet, but frizzy when dry. |
| Preliminary Test Curls | Gives you actual processing time needed, and curl results based on the rod size and perm product. |
| Underprocessing | Caused by insufficient processing time of the waving lotion. |
| Processing Time | The length of time required for the hair strands to absorb the waving lotion and recurl. |
| Neutralizer | Rehardens the hair and fixes it into its new curl formation. |
| Directional Wrapping | Refers to the angle of the partings, placement of the rods, and the wrapping pattern you choose to create specific direction or movement. |
| Body Waves | A perm that gives support to a style, without definite curl. |
| Partial Perming | Perming only a section of a whole head of hair. |
| Glyceryl Monothioglycolate | The main active ingredient in acid-balanced waving lotions. |
| 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. |
| Cortex | It is within this layer of the hair strand that the physical and chemical actions take place during the perming process to restructure the hair into a new curl configuration. |
| Polypeptide Chain | Formed when many amino acids are bonded together. |
| Disulfide Bonds | It is these bonds that must be broken down to allow the perming process to occur. |
| Processing | The chemical action that softens the inner structure of the hair enough that it can mold to the shape of the rod around which it is wound. |
| Porosity | The hair's capacity to absorb liquids. |
| Texture | Refers to how thick or thin each individual hair is. |
| Elasticity | The ability of hair to stretch and contract. |
| Density | The number of hairs per square inch on your client's head. It also determines the size of the partings you will use. |
| Sectioning | The dividing of hair into uniform working areas at the top, front, crown, sides, back and nape. |
| Parting or Blocking | The overall plan for rod placement in order to give the design the support, direction, and curl pattern it needs. |
| Single Halo Perm Wrap | Commonly used for average size heads to create even curls. |
| Double Halo Perm Wrap | Usually used for larger size heads. |
| End Wrap Papers | Allows the hair to be wrapped smoothly and without stretching around the permanent-wave rod. |
| Physical Action | Wrapping sections of hair around a perm rod. |
| Waving Lotion | Softens and expands or breaks the internal structure of the hair. |
| Cold Waves | A perm that does not use heat. Usually referred to as alkaline perms. |
| Stop Action Processing | Curling takes place within a fixed time without the risk of overprocessing or damaging the hair. |
