Lesson Notes By Weeks and Term v3 - Senior Secondary 1
Type of hair
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Type of hair
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Subject: Cosmetology
Class: Senior Secondary 1
Term: 2nd Term
Week: 4
Theme: Hair Care And Hair Products
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This topic introduces students to the diverse world of human hair, focusing on its various classifications and the essential care practices associated with each type. Understanding different hair types is fundamental to the field of cosmetology, enabling professionals to recommend appropriate products and treatments. For Nigerian learners, this knowledge is particularly relevant as it helps them understand and properly care for their own hair, which is predominantly Afro-textured, and also to serve a diverse clientele in the future.
Hair Care And Hair Products Type of hair Term: 2nd Term Week: 6 ---
1. Overview and Learning Objectives This topic introduces students to the diverse world of human hair, focusing on its various classifications and the essential care practices associated with each type. Understanding different hair types is fundamental to the field of cosmetology, enabling professionals to recommend appropriate products and treatments. For Nigerian learners, this knowledge is particularly relevant as it helps them understand and properly care for their own hair, which is predominantly Afro-textured, and also to serve a diverse clientele in the future. Upon completion of this lesson, students will be able to: Identify and describe the major classifications of human hair based on ethnicity and texture. Explain the characteristics unique to different hair types. Demonstrate practical methods for maintaining the health and appearance of various hair types, with a focus on types common in the Nigerian context.
2. Key Concepts and Explanations 2.
1. Definition of Hair Hair is a protein filament that grows from follicles found in the dermis, or skin. It is primarily composed of keratin. Understanding its structure (follicle, root, shaft, cuticle, cortex, medulla) provides a basis for appreciating hair health and type. 2.
2. Classification of Hair Types Hair can be broadly classified in several ways, primarily by ethnicity and texture. 2.2.
1. Classification by Ethnicity (Major Categories): This classification is based on general characteristics observed across different human populations. a.
Asiatic/Mongoloid Hair: Characteristics: Typically very straight, thick, and coarse. It has a round cross-section. The hair follicles grow perpendicular to the scalp, resulting in straight hair strands. It often has a dense cuticle layer.
Care Focus: Management of natural oils (can be oily), maintaining volume, and preventing breakage due to its strong structure. b.
Caucasian/European Hair: Characteristics: Exhibits the widest range of textures, from fine straight to wavy, and moderately curly. It has an oval to round cross-section. Hair follicles grow at an acute angle to the scalp. It varies widely in colour and density.
Care Focus: Tailored care based on specific texture (fine, thick, oily, dry), volume management, and maintaining moisture balance. c.
Afro/Negroid Hair (African Hair): Characteristics: Characterized by tight curls or coils, which can range from loose curls to very tight, often appearing to defy gravity. The hair shaft has an elliptical or flat cross-section, and the follicles grow parallel to the scalp, forming a hook shape. This unique structure causes the hair to grow in a spiral pattern. The cuticle layers tend to be raised, making it prone to dryness and breakage, and it often appears shorter than its actual length due to shrinkage.
Care Focus: Crucial for Nigerian context. Prioritizing moisture, gentle handling to prevent breakage, protective styling, and conditioning to maintain elasticity and shine. 2.2.
2. Classification by Texture (Andre Walker Hair Typing System - Simplified): This system categorizes hair based on its curl pattern, ranging from straight to coily. For SS1, a basic understanding of the main types (1, 2, 3, 4) and their general sub-categories (a, b, c) is sufficient. a.
Type 1: Straight Hair Characteristics: No natural curl. Hair strands tend to be shiny due to the oil easily travelling down the straight shaft. Can be fine, medium, or coarse.
Subtypes (general observation): 1A (pin straight, fine), 1B (straight with some body), 1C (straight with some wave/bend, coarse).
Care Focus: Oil control, volume, gentle cleansing. b.
Type 2: Wavy Hair Characteristics: Has a definite "S" shape pattern, from loose waves to defined waves that can be prone to frizz.
Subtypes: 2A (loose, barely-there waves), 2B (more defined S-shaped waves, can be frizzy), 2C (defined waves starting from the root, can be coarse and frizz-prone).
Care Focus: Enhancing wave pattern, frizz control, moisture balance without weighing down. c.
Type 3: Curly Hair Characteristics: Defined curl pattern, forming distinct loops or spirals. It tends to be voluminous and prone to dryness.
Subtypes: 3A (large, loose curls, like thick spirals), 3B (springy, tight curls, pencil-sized circumference), 3C (tight, corkscrew curls, straw-sized circumference, dense).
Care Focus: Moisture retention, curl definition, frizz control, (for High-Achieving Learners): Research Project: Assign students to research advanced hair typing systems (e.g., beyond Andre Walker to include density, elasticity) or delve deeper into the chemistry of hair and how different products interact with different hair structures.
Product Development Challenge: Task students with identifying a common hair care problem specific to a particular hair type in Nigeria and proposing a natural ingredient-based solution, including potential local sourcing of ingredients.
Case Study Analysis: Present students with more complex client scenarios involving multiple hair issues (e.g., Type 4C hair with high porosity and scalp issues) and have them develop a comprehensive care plan, including product recommendations and styling advice.
Salon Visit/Interview:** If feasible, encourage students to visit a local hair salon and interview a stylist about the most common hair types they encounter and their specialized care techniques. oval cross-section) (1 mark) = 2 marks Afro/Negroid Hair (1 mark) + 1 characteristic (e.g., tightly coiled, elliptical cross-section, prone to dryness) (1 mark) = 2 marks Total: 6 marks Question 2 (Aligned to Performance Objective 2: take care of the hair): Imagine a client with Type 4A hair that experiences significant dryness and breakage. Propose at least three practical methods for caring for this hair, detailing why each method is beneficial in the Nigerian context. (9 marks)
Marking Scheme: Method 1 (e.g., Regular Deep Conditioning): Name of method (1 mark) + explanation of benefit (e.g., replenishes moisture, improves elasticity) (1 mark) + relevance to Nigerian context (e.g., combating dryness due to climate, common issue for local hair types) (1 mark) = 3 marks Method 2 (e.g., Protective Styling - Braids/Twists): Name of method (1 mark) + explanation of benefit (e.g., reduces manipulation, protects ends from damage) (1 mark) + relevance to Nigerian context (e.g., popular styles, practical for busy lifestyle) (1 mark) = 3 marks Method 3 (e.g., LOC/LCO Method with Natural Oils): Name of method (1 mark) + explanation of benefit (e.g., layers moisture, seals cuticles, prevents rapid moisture loss) (1 mark) + relevance to Nigerian context (e.g., use of readily available local oils like shea butter/coconut oil, effective for local hair) (1 mark) = 3 marks (Accept any three valid and well-explained methods relevant to Type 4A hair care)
Total: 9 marks
7. Real-life Applications / Integration
1. Personal Hair Care and Health: Understanding hair types empowers individuals to make informed decisions about their own hair care routines, product choices (shampoos, conditioners, moisturizers suitable for their specific type), and styling techniques. This leads to healthier hair, reduced damage, and improved self-confidence, especially crucial in Nigeria where diverse hair textures require specific attention.
2. Cosmetology Profession and Entrepreneurship: For aspiring cosmetologists, this knowledge is foundational for providing effective salon services. It enables them to accurately diagnose clients' hair types, recommend appropriate treatments (e.g., deep conditioning, protein treatments, protective styles), and advise on home care. This can lead to specialized cosmetology businesses catering to specific hair types (e.g., natural hair salons), creating employment opportunities and developing local hair product lines tailored to Nigerian hair.
3. Community Health and Education: Knowledge of hair types and proper care can be integrated into community health initiatives. For instance, educating mothers on how to gently care for children's hair to prevent breakage, or teaching adolescents about maintaining healthy hair despite chemical treatments or heat styling. This helps dispel myths and promotes sustainable hair care practices within Nigerian communities.
8. Differentiation, Remediation and Extension Differentiation (for Diverse Learners): Visual Aids: Utilize large, clear charts, diagrams, and actual hair samples (if hygiene permits) to cater to visual learners.
Group Work: Assign students to small, mixed-ability groups for discussions and practical activities, allowing stronger students to guide and support those who are struggling.
Verbal Explanations: Provide clear, concise verbal explanations and allow time for questions and clarifications for auditory learners.
Practical Engagement: Ensure hands-on activities are simple and clearly demonstrated to engage kinesthetic learners.
Remediation (for Struggling Learners): Simplified Recap: Conduct a brief, focused recap of the main hair classifications and their most basic care needs.
One-on-One Check-ins: Provide individual support and clarification during activities, answering specific questions they may have missed.
Focused Activity: Assign a remedial task such as matching hair characteristics to their type using flashcards or a simple worksheet.
Peer Tutoring: Pair struggling learners with a more proficient peer to review key concepts and practice identification.
Extension (for High-Achieving Learners): Research Project: Assign students to research advanced hair typing systems (e.g., beyond Andre Walker to include density, elasticity) or delve deeper into the chemistry of hair and how different products interact with different hair structures.
Product Development Challenge: Task students with identifying a common hair care problem specific to a particular hair type in Nigeria and proposing a natural ingredient-based solution, including potential local sourcing of ingredients. * Case Study Analysis: Present students with more complex client scenarios involving multiple hair issues (e.g., Type 4C hair with