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Cosmetology vocab 15
n
| Term | Definition |
|---|---|
| hydroxide neutralization | Deactivates the alkaline residue that's left in the hair and properly acidifies the pH of the hair and scalp |
| super-strength relaxer | formulated for maximum concentration to straighten coarse to highly-textured hair |
| regular strength relaxer | formulated for healthy hair with wavy - coily texture, most commonly used relaxer |
| mild-stength relaxer | formulated for fine, color treated, or fragile hair. Does NOT require hydroxide in high concentration for straightening |
| no base relaxer | Has a protective base that melts at body temperature |
| base relaxer | Requires a separate application of a base cream on the entire scalp, next to the hairline, and the nape of the neck |
| base cream | An oily cream used to protect the skin and scalp during the hair relaxing process |
| No-lye relaxer | Lithium, potassium, and guanidine hydroxide relaxers. Best for clients with sensitive scalps. Used for when people are doing it at home |
| Lye relaxer | Sodium hydroxide based relaxer, used by professionals, oldest, and most common |
| Metal hydroxide relaxer | ionic compounds formed by a metal (sodium, potassium, or lithium) that is combined with oxygen and hydrogen |
| Lanthonization | When hydroxide relaxers permanently straighten hair by removing a sulfur atom from a disulfide bond converting it into a lanothine bond |
| Hydroxide ions | Negatively charged particles formed when a base dissolves in water |
| Ammonium sulfite relaxer | No-lye, low pH (6.5-8.5) Adv - Less damaging to the hair/not a common ingredient Dis- Does not sufficiently relax highly texture hair/coarse hair |
| Ammonium thioglycolate relaxer | No-lye, thio relaxer, (9.6-10.0) Adv-Suitable for clients that was to keep "texture" in their hair Dis- NOT compatible when has hair been previously treated with Lye or no-lye, or on highly textured hair |
| Guanidine hydroxide relaxer | No-lye (9.0-11.0) Adv- Suitable for clients with a looser curl or wave pattern Dis-NOT suitable for highly textured hair. May dehydrate and damage hair by causes less skin irritation |
| Lithium/potassium hydroxide relaxer | No-lye (9.0-11.0) Adv - Very effective for curl - wavy hair textures, Straightens with the aid of a mild strength chemical Dis - May cause scalp irration/damage |
| Sodium hydroxide relaxer | Lye (12.5-14.0) Adv - Very effective for coily, curly, wavy, and highly textured hair Dis - May cause scalp irritation/damage |