Term
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Definition
| tough exterior layer of the hair, surrounds inner layer and protects hair against damage |
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Term
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Definition
| middle layer of the hair, located directly beneath the cuticle layer. responsible for the strenghth and elasticity of hair |
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Term
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Definition
| Inermost layer of hair, often called "the pith"or core of hair |
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Term
| Peptide bonds or end bonds |
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Definition
| chemical bonds that link amino acids together |
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Term
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Definition
| only broken by chemicals, strong chemical side bonds formed when the sulfur atoms in 2 adjacent protein chains are joined together |
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Term
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Definition
| weak physical side bonds that are the result of an attraction between negative and positive electrical charges |
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Term
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Definition
| weak physical side bonds that are the result of the attraction between opposite electrical charges, easily broken by water or heat reforms as the hair dries or cools |
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Term
| 5 most important factors to consider in a hair analysis |
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Definition
| texture, density, porosity,elasticity, growth direction |
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Term
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Definition
| diameter of a single strand (coarse,medium, fine) |
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Term
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Definition
| # of hair per square inch |
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Term
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Definition
| ability of hair to absorb moisture |
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Term
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Definition
| the ability of the hair to stretch without breaking and return to its original shape |
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Term
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Definition
| how the hair naturally lays (foward, circular etc) |
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Term
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Definition
| have a small diameter in the center that increases to a larger diameter on the ends |
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Term
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Definition
| are equal in diameter along the entire lenghth, produces a uniform curl along the entire width of the strand |
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Term
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Definition
| absorbent papers used to control the ends of the hair when wrapping and winding hair on perm rods |
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Term
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Definition
| uses two end papers, one placed under and one over the strand of the hair being wrapped |
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Term
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Definition
| uses only one end paper, placed over the top of the strand being wrapped |
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Term
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Definition
| uses one end paper folded in half over the hair ends like a envelope |
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Term
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Definition
| panels of hair divided into subsections |
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Term
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Definition
| the position of the rod in relation to its base section, is determined by the angle at which the hair is wrapped |
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Term
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Definition
| hair is wrapped at 45 degrees beyond perpendicular to its base section |
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Term
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Definition
| wrapping the hair at a 90 degree angle or straight out from the center of the section |
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Term
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Definition
| wrapping the hair at a 45 degree below the center of the base section |
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Term
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Definition
| hair is wrapped at an angle other than perpendicular to the length of the rod |
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Term
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Definition
| a colorless liquid with a strong unpleasant odor, the most common reducing agent |
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Term
| ammonium thioglycolate (atg) |
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Definition
| the addition of ammonia to thioglycolate acid |
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Term
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Definition
| alkaline waves that process at room temperature without the addition of heat |
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Term
| Glyceryl monothioglycolate (GMTG) |
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Definition
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Term
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Definition
| avid waves that have a Ph between 7.8 and 8.2 |
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