Chapter 11 Theory Review
Instructions: Complete the following questions. When you are finished, compare your answers to the Theory Review Answer Key.
1. Why is it important for you to understand the growth, structure, and composition of hair?
2. Hair follicles are distributed all over the body, with the exception of
a)
b)
c)
3. What are the three main layers of the hair shaft?
4. Describe the cuticle layer.
5. What does a healthy cuticle layer protect?
6. Why must oxidation haircolors, permanent waving solutions, and chemical hair relaxers have an alkaline pH?
7. Which layer of the hair is the cortex?
8. Name three different hair properties for which the cortex is responsible:
9. In what layer of the hair do changes involving oxidation haircolor, wet setting, thermal styling, permanent waving, and chemical hair relaxing take place?
10. List some good sources of amino acids.
11. Hair is a living thing.
___True
___False
Explain your answer.
12. List the main elements that make up human hair and their percentage in normal hair.
a)
b)
c)
d)
e)
13. What are the three types of side bonds that cross-link polypeptide chains?
14. How are a hair’s strong chemical side bonds broken?
15. How is gray hair different from other hair colors?
16. Describe vellus hair.
17. On adults, vellus hair is usually found on what part(s) of the body?
18. Describe terminal hair.
19. Where is terminal hair found on the body?
20. How frequently does the average hair growth cycle take to repeat itself?
21. Describe why bald and balding men and women are emotionally affected by their hair loss.
22. By the age of 35, what percentage of men and women show some degree of hair loss?
23. What is alopecia areata?
24. What are the only two products that have been proven to stimulate hair growth and are and approved by the Food and Drug Administration (FDA)?
25. Why are pregnant women warned against having any contact with the oral prescription medication used to treat hair loss in men?
26. Describe surgical treatments for hair loss.
27. What nonmedical options can a hairstylist offer to counter hair loss?
28. Summarize the different possible causes of hair loss.
29. What is an example of hypertrichosis? What are possible treatments?
30. How many pounds of dead skin does the average person shed each year?
31. What is the difference between dry scalp and dandruff?
32. What is the treatment for dandruff?
33. List the two principal types of dandruff and their characteristics:
34. What is seborrheic dermatitis?
35. Name some causes of dry scalp.
36. What does tinea look like?
37. What does tinea barbae affect?
38. List the ways head lice are transmitted from an infected person to a noninfected person.
39. As a cosmetologist, what are two ways you can help prevent the spread of infectious conditions?
40. What special tools does a cosmetologist need to perform a hair analysis?
41. Explain the connection between hair analysis and retailing.
42. List and define the four most important factors to consider in hair analysis
43. What are the classifications of hair texture?
44. Which hair texture has the largest diameter?
45. Which hair texture is the most common and is the standard?
46. Which hair texture has the smallest diameter and is more fragile?
47. Which hair texture usually requires extra processing when applying a product like haircolor?
48. What are the classifications of hair density?
49. What is the degree of porosity directly related to? Why?
50. Describe how to check porosity.
51. In a porosity check, what does it mean if the hair feels smooth?
52. In a porosity check, what does it mean if you can feel a slight roughness?
53. In a porosity check, what does it mean if the hair feels very rough or dry or breaks?
54. What does hair elasticity indicate?
55. What are the characteristics of oily hair and scalp?
©2011 Milady, a part of Cengage Learning 3 of 3