Podcast
Questions and Answers
What is the process that rearranges the structure of curly hair into a straighter or smoother form?
What is the process that rearranges the structure of curly hair into a straighter or smoother form?
- Chemical Hair Relaxing (correct)
- Permanent Waving
- Hair Conditioning
- Hair Coloring
Which of the following are common types of chemical hair relaxers? (Select all that apply)
Which of the following are common types of chemical hair relaxers? (Select all that apply)
- Ammonium Thio (correct)
- Sodium Hydroxide (correct)
- Guanidine (correct)
- Hydrogen Peroxide
What is sodium hydroxide categorized as?
What is sodium hydroxide categorized as?
A lye-based relaxer
How do permanent wave and relaxer services compare?
How do permanent wave and relaxer services compare?
What does viscosity measure in the context of hair relaxers?
What does viscosity measure in the context of hair relaxers?
What is the primary ingredient in thio relaxers?
What is the primary ingredient in thio relaxers?
What is the neutralizer used with thio relaxers?
What is the neutralizer used with thio relaxers?
What is the active ingredient in all hydroxide relaxers?
What is the active ingredient in all hydroxide relaxers?
Which relaxers can swell the hair up to twice its normal diameter? (Select all that apply)
Which relaxers can swell the hair up to twice its normal diameter? (Select all that apply)
What is the characteristic of hydroxide relaxers in relation to thio relaxers?
What is the characteristic of hydroxide relaxers in relation to thio relaxers?
What is lanthionization?
What is lanthionization?
What type of hair is unfit for permanent waving?
What type of hair is unfit for permanent waving?
What are metal hydroxide relaxers?
What are metal hydroxide relaxers?
What are the three strengths of hair relaxers?
What are the three strengths of hair relaxers?
What are common low-pH relaxers?
What are common low-pH relaxers?
What type of relaxers should be used for fine, color-treated, or damaged hair?
What type of relaxers should be used for fine, color-treated, or damaged hair?
What is Periodic Strand Testing?
What is Periodic Strand Testing?
What does hydroxide neutralization achieve?
What does hydroxide neutralization achieve?
What are normalizing lotions?
What are normalizing lotions?
What do Brazilian Keratin Treatments contain?
What do Brazilian Keratin Treatments contain?
What is a soft curl permanent?
What is a soft curl permanent?
Flashcards
Chemical Hair Relaxers
Chemical Hair Relaxers
Rearrange curly hair structure for a straighter or smoother form.
Thio Relaxers
Thio Relaxers
No-lye relaxers using similar chemistry to permanent waves, but higher concentrations.
Guanidine Relaxers
Guanidine Relaxers
No-lye relaxers, similar to thio relaxers.
Sodium Hydroxide Relaxers
Sodium Hydroxide Relaxers
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Hydroxide Relaxers
Hydroxide Relaxers
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Disulfide Bonds
Disulfide Bonds
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Lanthionine Bonds
Lanthionine Bonds
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Permanent Wave Services
Permanent Wave Services
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Thio Relaxer pH
Thio Relaxer pH
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Hydroxide Relaxer pH
Hydroxide Relaxer pH
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Mild Relaxers
Mild Relaxers
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Regular Strength Relaxers
Regular Strength Relaxers
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Super Strength Relaxers
Super Strength Relaxers
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Base Creams
Base Creams
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Hydroxide Neutralization
Hydroxide Neutralization
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Normalizing Lotions
Normalizing Lotions
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Brazilian Keratin Treatments
Brazilian Keratin Treatments
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Soft Curl Permanent
Soft Curl Permanent
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Study Notes
Chemical Hair Relaxers
- Chemical hair relaxing rearranges the structure of curly hair into a straighter or smoother form.
- Common types include ammonium thio, guanidine, hydroxide, and sodium hydroxide.
Types of Relaxers
- Thio and Guanidine Relaxers: Classified as no-lye relaxers.
- Sodium Hydroxide: Considered a lye-based relaxer.
- Hydroxide Relaxers: Strong alkalis with a pH over 13; contain hydroxide ion as the active ingredient.
Chemistry of Relaxers
- Permanent wave services and relaxers both break disulfide bonds to change hair shape.
- Thio relaxers use similar active ingredients to permanent waving at a higher concentration and pH (above 10).
- Hydroxide relaxers undergo lanthionization, permanently breaking disulfide bonds into lanthionine bonds.
pH Levels
- Thio relaxers have a pH between 9-11.5.
- Hydroxide relaxers have a pH range of 11.5-14.0.
Compatibility
- Hydroxide relaxers make hair unfit for permanent waving due to incompatible chemistry.
- Metal hydroxide relaxers require no mixing and are applied directly from the container.
Hair Types and Relaxer Strengths
- Available in mild, regular, and super strengths tailored to hair types.
- Mild-Strength Relaxers: Suitable for fine, color-treated, or damaged hair; can also texturize.
- Regular Strength Relaxers: For normal hair texture, commonly used for smooth straight results.
- Super-Strength Relaxers: Designed for maximum straightening on coarse and resistant hair.
Application Techniques
- Base cream is used to protect skin and scalp during relaxing.
- Base relaxers require protective base cream application prior to relaxer use.
- No-base relaxers do not necessitate protective cream.
- Periodic strand testing helps determine processing time based on manufacturer recommendations and hair condition.
Post-Relaxer Treatments
- Hydroxide neutralization involves an acid-alkali reaction to deactivate alkaline residues and lower pH; does not rebuild disulfide bonds.
- Normalizing lotions condition hair with acidic pH to restore hair after treatment.
Additional Treatments
- Brazilian Keratin Treatments use silicone polymers and formalin, releasing formaldehyde gas when heated.
- Soft curl permanent uses thio-based chemicals for looser curls, similar to thio permanent waves.
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Description
This quiz focuses on the key concepts from Milady's Chapter 20 on Chemical Hair Relaxers. You'll learn about the processes involved in hair relaxing, the types of chemical relaxers, and their classifications. Perfect for beauty students and professionals looking to reinforce their knowledge in hair care.
