California Barber PSI Exam: Scientific Concepts & Sanitation Questions
And Answers With Complete Solutions Grade A+.
What is the main structural protein found in hair? - ANSWER: Keratin
What is the outermost layer of the hair shaft called? - ANSWER: Cuticle
What is the pH range of healthy hair and skin? - ANSWER: 4.5-5.5
What is the main purpose of a shampoo's surfactant? - ANSWER: Remove oil and
dirt
What is the function of a conditioner? - ANSWER: Close the cuticle and restore
moisture
What are the three parts of a hair strand? - ANSWER: Cuticle, cortex, medulla
What type of infection is caused by pathogenic bacteria entering the body? -
ANSWER: Systemic
Which bacteria cause abscesses and pustules? - ANSWER: Staphylococci
What are the two types of sanitizers used in barbershops? - ANSWER: Chemical
and UV
Which disinfectant is EPA-registered for use in barbershops? - ANSWER:
Quaternary ammonium compounds (quats)
And Answers With Complete Solutions Grade A+.
What is the main structural protein found in hair? - ANSWER: Keratin
What is the outermost layer of the hair shaft called? - ANSWER: Cuticle
What is the pH range of healthy hair and skin? - ANSWER: 4.5-5.5
What is the main purpose of a shampoo's surfactant? - ANSWER: Remove oil and
dirt
What is the function of a conditioner? - ANSWER: Close the cuticle and restore
moisture
What are the three parts of a hair strand? - ANSWER: Cuticle, cortex, medulla
What type of infection is caused by pathogenic bacteria entering the body? -
ANSWER: Systemic
Which bacteria cause abscesses and pustules? - ANSWER: Staphylococci
What are the two types of sanitizers used in barbershops? - ANSWER: Chemical
and UV
Which disinfectant is EPA-registered for use in barbershops? - ANSWER:
Quaternary ammonium compounds (quats)
