NH Cosmetology study plan

Define the structure and growth phases of hair (anagen, catagen, telogen) and explain how each phase affects chemical service decisions

Identify the layers of the hair shaft (cuticle, cortex, medulla) and describe how each responds to water, heat, and alkaline products

Explain the role of pH, the acid mantle, and the isoelectric point of hair in maintaining hair health

Describe the three types of side bonds (disulfide, salt, hydrogen) and predict which bonds are broken by water, heat, and relaxers

List the components of a hair analysis and demonstrate the technique on a mannequin or model

Differentiate the hair types and textures using the Andre Walker or similar classification system and match each to appropriate product selection

Explain the function and correct use of shampoos, conditioners, and scalp treatments by surfactant type and pH

Describe the signs of scalp and hair disorders (alopecia, seborrheic dermatitis, tinea, pediculosis) and state when to refer a client to a physician

Explain the principles of hair color theory (the law of color, primary/secondary/tertiary colors, complementary colors) and demonstrate how to neutralize unwanted tones

Compare the functions of proteins, humectants, and emollients in conditioning products

Identify the sections, subsections, and distribution patterns used in haircutting and demonstrate proper sectioning on a mannequin

Explain the four basic haircutting lines (horizontal, vertical, diagonal, curved) and predict the effect of each on weight distribution

Describe the elevation angles (0, 45, 90, 135, 180 degrees) and match each to a haircut outcome

Demonstrate the correct holding positions and cutting techniques for blunt, graduated, layered, and long-layered cuts

Explain the safe use and maintenance of shears, razors, and clippers

Demonstrate the three basic styling techniques: blow-dry styling, thermal styling, and wet styling, including proper tool selection

Explain the effect of heat on hair and the safety rules for flat irons, curling irons, and blow dryers

Demonstrate roller placement and the resulting curl direction for volume and movement

Describe the elements and principles of hair design and apply them to a client consultation

Practice a full client consultation that includes face shape analysis, lifestyle questions, and a maintenance plan

Explain the chemistry of permanent and demi-permanent hair color, including the role of ammonia, developer volume, and the oxidation process

Calculate developer volume and processing time for gray coverage, deposit-only, and lift services

Describe the classifications of hair lighteners and the rules for testing, strand testing, and patch testing

Explain the chemistry of permanent wave solutions (thioglycolate vs. glyceryl monothioglycolate) and the neutralization step

Identify the safety precautions and contraindications for chemical services, including a history of allergic reaction or metallic salts

Describe the chemistry of relaxers (sodium hydroxide, guanidine, ammonium thioglycolate, and no-lye) and the hair types each suits

Demonstrate the correct application sequence for a relaxer retouch, including base application, smoothing, and rinsing

Explain the procedure for a virgin relaxer application and the precautions for overlapping and scalp irritation

Describe the steps of a permanent wave service, including wrapping patterns and processing checks

Identify the causes of chemical service failures (underprocessing, overprocessing, breakage, uneven color) and the corrective action for each

Explain the principles of infection control: cleaning, disinfection, and sterilization, and identify which level applies to which salon tool

List the standard precautions and demonstrate proper handwashing and glove use

Describe the causes, signs, and treatment options for common skin conditions (acne, rosacea, hyperpigmentation, aging) and identify when to refer

Describe the structure of the nail and the basic manicure and pedicure procedures, including contraindications

Explain the safe use and disposal of chemicals, including Material Safety Data Sheets and salon ventilation requirements

Review and self-quiz on all four domains using a timed practice set of at least 100 questions

Re-demonstrate the weakest two practical skills identified in weeks 3 through 6

Create a one-page summary sheet of key formulas, pH values, and safety rules for each domain

Complete a full mock practical exam covering haircutting, styling, color, and sanitation in one session