Hair Science Course

Lesson 1 • Hair Growth Cycle Phases

Details anagen, catagen, telogen, and exogen phases with durations. Provides the biological basis for understanding hair loss and growth treatments.

Lesson 2 • Hair Shaft Composition

Breaks down cuticle, cortex, and medulla layers and their chemical makeup. Connects structure to mechanical and optical hair properties.

Lesson 3 • Anatomy of the Hair Follicle

Examines follicle layers, dermal papilla, and sebaceous gland roles. Establishes structural vocabulary used throughout the course.

Lesson 4 • Hair Pigmentation Mechanisms

Explains melanocyte activity, eumelanin and pheomelanin synthesis, and graying causes. Links pigment science to color service outcomes.

Lesson 1 • Scalp Microbiome and Chemistry

Introduces the scalp's microbial ecosystem and sebum composition. Links microbiome imbalance to dandruff, seborrhea, and scalp sensitivity.

Lesson 2 • Water and Hair Interaction

Analyzes hygroscopic behavior, hydration levels, and water's role in styling. Connects moisture balance to hair strength and manageability.

Lesson 3 • pH Scale and Hair Health

Defines pH, its scale, and the hair's natural isoelectric point. Shows how pH deviation causes cuticle swelling or tightening.

Lesson 4 • Ingredient Science for Hair Products

Decodes surfactants, conditioning agents, humectants, and film-formers. Enables evidence-based product selection for diverse hair needs.

Lesson 1 • Hair Typing Classification Systems

Compares curl pattern, porosity, and density classification frameworks. Establishes a shared language for consistent client documentation.

Lesson 2 • Client Consultation Framework

Structures intake questions covering history, lifestyle, and goals. Ensures informed consent and realistic expectation-setting before services.

Lesson 3 • Porosity and Elasticity Testing

Demonstrates float, slide, and stretch tests for porosity and elasticity. Translates test results into formulation and processing time decisions.

Lesson 4 • Scalp Condition Assessment

Teaches visual and tactile scalp analysis for oiliness, dryness, and sensitivity. Connects scalp health findings to product and treatment recommendations.

Lesson 1 • Water Temperature and Rinsing Technique

Explains how water temperature affects cuticle state during cleansing and rinsing. Establishes best practices for sealing the cuticle post-conditioning.

Lesson 2 • Co-washing and Low-Poo Methods

Introduces conditioner-only washing and low-lather cleansing for curly and dry hair. Evaluates trade-offs between cleansing efficacy and moisture retention.

Lesson 3 • Conditioner Types and Mechanisms

Distinguishes rinse-out, leave-in, and deep conditioners by ingredient concentration and contact time. Explains electrostatic bonding to the cuticle.

Lesson 4 • Shampoo Formulation and Function

Analyzes how surfactant micelles remove sebum, debris, and product buildup. Matches shampoo type to scalp condition and hair porosity.

Lesson 1 • Direct and Semi-Permanent Color

Covers direct dye deposition without oxidation, including vivid and fashion shades. Explains fade patterns and maintenance intervals for non-oxidative color.

Lesson 2 • Color Theory for Hair Professionals

Applies the color wheel, levels, and tonal values to hair color formulation. Builds the visual literacy needed for accurate color correction.

Lesson 3 • Color Application Techniques

Demonstrates sectioning, saturation, and timing for full color, roots, and highlights. Connects application precision to even, predictable color results.

Lesson 4 • Color Correction Strategies

Addresses banding, hot roots, unwanted warmth, and over-processed hair. Provides a decision framework for multi-step correction plans.

Lesson 5 • Oxidative Color Chemistry

Explains how hydrogen peroxide and oxidative dye molecules interact to deposit and lift color. Covers developer volume selection by lift goal.

Lesson 1 • Contraindications and Safety Protocols

Identifies conditions that contraindicate chemical texture services and required safety steps. Ensures client safety and professional liability management.

Lesson 2 • Relaxer Chemistry and Application

Covers hydroxide and thio relaxer chemistry, processing stages, and neutralization. Distinguishes lye from no-lye formulations and their scalp implications.

Lesson 3 • Permanent Wave Chemistry

Explains thio reduction, rod wrapping, and oxidation fixation in perming. Connects rod size and wrapping angle to curl diameter and pattern.

Lesson 4 • Pre- and Post-Service Hair Care

Establishes preparation and aftercare protocols that protect integrity before and after chemical texture services. Reduces breakage and extends service results.

Lesson 1 • Client Communication and Referral

Develops empathetic communication strategies for sensitive hair loss conversations. Establishes clear referral pathways to dermatologists and trichologists.

Lesson 2 • Scalp Analysis for Hair Loss

Uses trichoscopy principles and visual assessment to evaluate hair loss severity. Guides referral decisions and treatment planning.

Lesson 3 • Topical and In-Salon Interventions

Reviews evidence for topical minoxidil, scalp massage, low-level laser, and PRP. Clarifies scope of practice boundaries for salon professionals.

Lesson 4 • Classification of Hair Loss Conditions

Distinguishes androgenetic, alopecia areata, traction, and telogen effluvium types. Provides diagnostic criteria for each classification.

Lesson 1 • Diagnosing Hair Damage Types

Identifies mechanical, thermal, chemical, and environmental damage through visual and tactile assessment. Prioritizes repair strategies by damage severity.

Lesson 2 • Customized Treatment Plan Design

Integrates assessment data into a structured, multi-session repair plan with measurable milestones. Prepares students for advanced client case management.

Lesson 3 • Protein and Moisture Repair Treatments

Selects hydrolyzed protein sizes and humectant combinations matched to damage type. Explains treatment sequencing for maximum structural restoration.

Lesson 4 • Heat Damage Prevention and Recovery

Establishes safe heat styling temperature ranges and thermal protectant mechanisms. Designs recovery protocols for heat-damaged hair.