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Properties of the Hair and Scalp PowerPoint Presentation

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Description : Check out this medical PowerPoint presentation titled "Properties of the Hair & Scalp".

This medical PowerPoint presentation talks about the hair and scalp which are essential components of the human body that serve various functions, including protection, insulation, and sensory perception.

Tags : Hair, Scalp, Dermatology, Dermatology PowerPoint presentation

Published on : Mar 31, 2023 | Views : 1937 | Downloads : 6

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Slide 1-

Chapter 11 Properties of the Hair & Scalp
Slide 2-

Identify and distinguish the different structures of the hair root. Point out and differentiate the differences among the three main layers of the hair shaft. Identify and explain the three types of side bonds in the cortex. Name and compare the differences among the three cycles of hair growth. Learning Objectives (continues)
Slide 3-

Give examples of the common types of hair loss and explain what can cause hair loss. Identify and explain at least three options for hair loss treatment. Learn to identify the most common hair and scalp disorders seen in the salon and school, and then name which ones a physician should treat. Compare and describe the different factors that should be considered during a hair and scalp analysis. Learning Objectives (continued)
Slide 4-

Hairstylists play an important role in many people’s lives. All hair services must be based on a thorough understanding of the growth, structure, and composition of hair. Introduction
Slide 5-

Discover the Structure of Hair Trichology – the scientific study of hair, its diseases, and its care Hair root – the part of the hair located below the surface of the epidermis (outer layer of the skin) Hair shaft – portion of the hair that projects above the epidermis
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Structures of the Hair Root Hair follicle Distribution Growth Hair bulb Dermal papilla Arrector pili muscle Sebaceous glands
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Structures of the Hair Shaft Hair cuticle Cortex Medulla
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Learn About the Chemical Composition of Hair Hair is approximately 90 percent protein. The protein is made up of long chains of amino acids, which, in turn, are made up of elements. The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur and are often referred to as the COHNS elements. These five elements are also found in skin and nails.
Slide 10-

COHNS Elements Carbon – 51 percent Oxygen – 21 percent Hydrogen – 6 percent Nitrogen – 17 percent Sulfur – 5 percent
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Keratinization Keratinization – maturing process of living cells that originate within the hair follicle. As these newly formed cells mature, they fill up with a fibrous protein called keratin.
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Amino Acids Linked like pop beads Peptide or end bonds Polypeptide chain Helix
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Side Bonds of the Cortex Hydrogen bonds Salt bonds Disulfide bonds Lanthionine bonds
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Slide 15-

Bonds of the Hair
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Hair Pigment Melanin – tiny grains of pigment Eumelanin – provides dark brown/black color Pheomelanin – provides yellow to red/ginger color Natural hair color – result of ratio of eumelanin to pheomelanin Gray hair – absence of melanin
Slide 17-

Wave Patterns Straight hair Wavy hair Curly hair Extremely curly hair
Slide 18-

The Truth About Hair Growth Types of hair Vellus hair: short, fine, downy, unpigmented hair on body Terminal hair: long, thick, pigmented hair found on scalp, legs, arms, and body Pfizer Inc.
Slide 19-

Growth Cycles of Hair Anagen – growing phase Catagen – transition phase Telogen – resting phase
Slide 20-

Myths and Facts About Hair Growth Myths Shaving, clipping, cutting makes hair grow faster. Scalp massage increases growth. Gray hair is coarser and more resistant. Natural curl determined by race. Round cross section is straight; oval cross section is wavy; flat cross section is curly.
Slide 21-

Understand Hair Loss Causes and Treatment The growth cycle provides for the continuous growth, fall, and replacement of individual hair strands. Natural shedding: 35 to 40 hairs per day
Slide 22-

Emotional Impact of Hair Loss Perception of bald and balding men: Less attractive Less assertive Less successful Less personally likeable Older by five years (continues)
Slide 23-

Men Negative social and emotional effects Preoccupation with baldness Effort made to conceal Women Devastation Anxiety Feelings of helplessness and unattractiveness Emotional Impact of Hair Loss (continued)
Slide 24-

Types of Abnormal Hair Loss Abnormal hair loss is called alopecia. The three most common types of abnormal hair loss: Androgenic alopecia Alopecia areata Postpartum alopecia
Slide 25-

Androgenic Alopecia Progressive shrinking or miniaturization of terminal hair Affects millions of men and women in the United States Pfizer Inc.
Slide 26-

Alopecia Areata Sudden loss in round or irregular patches Affects 5 million people in the United States Immune system attacks hair follicles Begins with small bald patches Occurs in males and females of all ages and races Courtesy of Robert A. Silverman, M.D., Clinical Associate Professor, Department of Pediatrics, Georgetown University.
Slide 27-

Postpartum Alopecia Temporary hair loss at conclusion of pregnancy Growth cycle returns to normal within one year after delivery of baby
Slide 28-

Hair Loss Treatments Minoxidil – topical treatment Finasteride – oral treatment
Slide 29-

Recognize Disorders of the Hair Canities Congenital canities Acquired canities Ringed hair Hypertrichosis Trichoptilosis (continues) Courtesy of P&G Beauty from the World of Hair by John Gray.
Slide 30-

Trichorrhexis nodosa Monilethrix Fragilitas crinium Recognize Disorders of the Hair (continued) Courtesy of P&G Beauty from the World of Hair by John Gray.
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Slide 32-

Recognize Disorders of the Scalp Pityriasis Malassezia Pityriasis capitis simplex Pityriasis steatoides Photography: Courtesy of P&G Beauty
Slide 33-

Fungal Infections Tinea Tinea capitis Tinea favosa Courtesy of Robert A. Silverman, M.D., Clinical Associate Professor, Department of Pediatrics, Georgetown University.
Slide 34-

Parasitic Infections Scabies – itch mite Pediculosis capitis – head lice Courtesy of The National Pediculosis Association,® Inc. Courtesy of Hogil Pharmaceutical Corporation.
Slide 35-

Bacterial Infections Furuncle Carbuncle Folliculitis © Inxti/Shutterstock.com
Slide 36-

Perform a Thorough Hair and Scalp Analysis Hair Texture Coarse Medium Fine The Gillette Research Institute. The Gillette Research Institute. The Gillette Research Institute.
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Slide 38-

Hair Density Low: thin Medium: medium High: thick dense Average: 2,200 hairs per square inch
Slide 39-

Porosity Low porosity Average porosity High porosity The Gillette Research Institute. The Gillette Research Institute. The Gillette Research Institute.
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Slide 41-

Elasticity Normal elasticity Low elasticity Testing for elasticity
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Slide 43-

Hair Growth Patterns Hair stream – hair flowing in same direction Whorl – hair forms in a circular pattern Cowlick – tuft of hair that stands straight up
Slide 44-

Dry Hair and Scalp Hair appears dull, dry, lifeless. Avoid frequent shampooing, strong soaps, detergents, or products with a high alcohol content.
Slide 45-

Oily Hair and Scalp Use normalizing shampoos. Eat a well-balanced diet. Exercise. Shampoo regularly and frequently. Practice good personal hygiene.
Slide 46-

Summary and Review Trichology enables the professional cosmetologist to better understand both the physical and microscopic properties of the hair. You must be able to recognize those conditions of the hair and scalp needing treatment. Practicing proper disinfection procedures that are approved by your oversight regulatory agency will prevent the spread of disease.
Slide 47-

Chapter Review Questions Name and describe the five main structures of the hair root. Name and describe the three layers of the hair. Describe the process of keratinization. What are polypeptide chains? (continues)
Slide 48-

List and describe the three types of side bonds. Indicate whether they are strong or weak and why. Name and describe the two types of melanin responsible for natural hair color. Chapter Review Questions (continued) (continues)
Slide 49-

Name and describe the two types of hair and their locations on the body. What are the three phases of the hair growth cycle and what occurs during each? What is the reason for normal daily hair loss? What are the most common types of abnormal hair loss? Chapter Review Questions (continued) (continues)
Slide 50-

What are the only two approved hair loss treatments? Name the two main types of dandruff and state whether either can be treated in the salon. Which scalp and hair disorders cannot be treated in the salon? What four factors should be considered in hair analysis? Chapter Review Questions (continued)