NJ Cosmetology study guide
NJ Cosmetology · Work through your exam, one topic at a time.
The New Jersey Cosmetology licensing examination is the assessment a candidate must pass to be licensed as a cosmetologist and hairstylist by the New Jersey Board of Cosmetology and Hairstyling, which operates within the Division of Consumer Affairs. The credential is required before you may legally perform cosmetology services for compensation in the state, and it is what employers, salon owners, and clients check when verifying that a practitioner is authorized to work. The NJ Cosmetology study guide has 9 sections and about 2,867 words.
01Haircutting and Hair Styling
Every haircut is controlled by sectioning, distribution, elevation, and tension. Elevation does most of the work: 0° produces a blunt, one-length line; 45° produces a graduated (stacked) shape; 90° produces uniform layers; 180° produces long, blended layers.
324 words, about 2 min02Chemical Texture Services (perms and relaxers)
A curl or a straightened strand is really a rearrangement of disulfide bonds. Perm solution is a reducing agent - ammonium thioglycolate is the classic - that breaks those bonds; the neutralizer is an oxidizing agent (hydrogen peroxide or sodium bromate) that rebuilds them in the new shape.
331 words, about 2 min03Hair Coloring and Lightening
Color is described by level (lightness, 1 black through 10 lightest blonde) and tone (warm, cool, neutral). The law of color governs mixing: primaries combine into secondaries, and a color opposite on the wheel neutralizes its counterpart - blue cancels orange, violet cancels yellow, green cancels red.
317 words, about 2 min04Shampooing, Conditioning, and Scalp Care
Scalp and hair sit at roughly pH 4.5-5.5, so acid-balanced shampoos are the default for chemically treated hair because they close the cuticle and support color retention. Shampoo should be chosen for the scalp and conditioner for the hair: an oily scalp with dry ends may need a clarifying shampoo at the scalp and conditioner on the ends only.
300 words, about 2 min05Nail Care and Manicuring
The matrix produces the nail plate; damage there shows up as a permanent groove or distortion. The nail bed lies under the plate, the lunula is the visible portion of the matrix, the eponychium (cuticle) seals the base, the hyponychium sits under the free edge, and the sidewalls and nail folds frame the nail.
327 words, about 2 min06Skin Care and Facial Services
Classify skin as normal, dry, oily, or combination, and note sensitivity separately - sensitive is a condition, not a type. The Fitzpatrick scale (I-VI) predicts sun response and guides treatment intensity; types I-II burn easily and need conservative exfoliation and wax temperatures.
298 words, about 1 min07Infection Control, Sanitation, and Salon Safety
Cleaning removes visible debris with soap and water; disinfection destroys most pathogenic organisms on nonporous surfaces; sterilization destroys all organisms, including spores, and is done with an autoclave. These are not interchangeable, and questions test the order: an implement must be cleaned and dried before immersion in disinfectant, or the disinfectant is overwhelmed and fails.
308 words, about 2 min08New Jersey Laws, Rules, and Regulations
Cosmetology in New Jersey is governed by the Board of Cosmetology and Hairstyling, which sits within the Division of Consumer Affairs in the Department of Law and Public Safety. The Board's rules appear in Title 13, Chapter 28 of the New Jersey Administrative Code (N.J.A.C.
327 words, about 2 min09Professional Practices and Salon Business
There are three common compensation models. Commission pays a percentage of service revenue, often with a draw or a scale that rises as revenue grows.
335 words, about 2 min