Permanent Waving

What is the primary chemical used in the process of permanent waving in hairdressing?

• Ammonium thioglycolate

• Sodium hydroxide

• Hydrogen peroxide

• Ethanol

Which bond in the hair structure is primarily broken and reformed during the permanent waving process?

• Hydrogen bonds

• Disulfide bonds

• Peptide bonds

• Ionic bonds

What is the role of neutralizer in the permanent waving process?

• To soften the hair

• To break disulfide bonds

• To reform disulfide bonds

• To add moisture

Which of the following is a key step in the permanent waving process?

• Oxidation

• Reduction

• Hydrolysis

• Polymerization

What is the typical pH range of a permanent wave solution?

• 2-3

• 4-5

• 7-8

• 9-10

In the context of permanent waving, what does the term 'processing time' refer to?

• The time taken to apply the solution

• The time the solution is left on the hair

• The time taken to rinse the solution

• The time taken to dry the hair

Which scientific principle is primarily involved in the permanent waving process?

• Thermodynamics

• Kinetics

• Chemical equilibrium

• Electrochemistry

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

What is the effect of temperature on the rate of the permanent waving process?

• No effect

• Decreases the rate

• Increases the rate

• Reverses the process

Tags

NGSS.HS-PS1-5

Which of the following is a common test to check if the permanent wave process is complete?

• Elasticity test

• Porosity test

• Strand test

• pH test

What is the main reason for using a neutralizer after the waving lotion in permanent waving?

• To increase hair volume

• To stabilize the pH

• To harden the hair

• To stop the chemical reaction