NY Cosmetology common mistakes
NY Cosmetology · Understand the traps and how to avoid them.
When a question describes tinted, bleached, or relaxed hair, the candidate picks the shampoo or conditioner described as 'deep-cleansing,' 'clarifying,' or 'high pH' because it sounds stronger, and calls pH 7 'acid-balanced.'
Product names and marketing words get memorized instead of the pH scale, and the link between pH and cuticle behavior is learned as trivia rather than as the decision rule.
What to do instead
Drill one rule until automatic: hair and skin sit near pH 4.5-5.5, so 'acid-balanced' means that range, never 7. Alkaline lifts the cuticle (useful for shampooing and opening; bad for color retention); acids close it (conditioning, post-color). Before answering, ask 'does this client need the cuticle open or closed?'
Matching the wrong elevation to a named cut - answering 90 degrees for a graduated bob, 0 degrees for a uniform layer, or 180 degrees for a blunt one-length cut.
The four angles are memorized as a list of numbers rather than as four pictures, while the exam phrases them in client-language results such as 'builds weight at the perimeter.'
What to do instead
Draw and label the four pictures once: 0 = one length/blunt, 45 = graduated, 90 = uniform layers, 180 = long layers. On every cutting question, sketch the head and the hair's fall line before reading the answer choices.
Answering that a large-diameter rod produces a tight curl, or choosing a rod whose size contradicts the section size and winding tension stated in the question.
Rod diameter, base section size, and tension interact, but candidates usually memorize only one variable at a time.
What to do instead
Rehearse the inverse relationship aloud: smaller rod = smaller curl diameter = more texture; larger rod = larger, looser wave. Then check the second constraint - sections no wider or deeper than the rod, and base control (on-base, half-base, off-base) - before committing.
Treating all relaxers as identical: stating that a sodium hydroxide relaxer must be neutralized, or that a thio relaxer can simply be rinsed out and left.
Both look like 'chemical straightening' on the label, so the two chemistries get collapsed into one procedure and learned once.
What to do instead
Separate them by chemistry: thio relaxers break disulfide bonds and must be neutralized/oxidized to rebuild them; hydroxide relaxers do not break disulfide bonds and need thorough rinsing plus an acid-balanced shampoo, not a neutralizer. Also memorize the hard contraindication - never put hydroxide on hair previously relaxed with thio (or vice versa), or on hair with metallic/henna history.
Labeling oily-but-dehydrated skin as 'dry skin type' and choosing a heavy occlusive treatment, or selecting exfoliation, steam, or massage for skin with inflamed cystic acne, open lesions, or sunburn.
Sebum production and water content are two different measurements, and candidates use 'dry' to mean 'looks flaky.'
What to do instead
Classify in two separate steps: oil production (dry/oily/normal/combination) and condition (dehydrated, sensitive, acne, mature). Then apply the contraindication list - no exfoliation, heat, or massage on inflamed acne, open lesions, sunburn, or undiagnosed rash; refuse and refer instead.
Choosing to buff, polish, or 'cover' a nail with discoloration, thickening, or separation at the free edge instead of refusing the service and referring the client.
Nail disorders (which a cosmetologist may work with, with care) and nail diseases (medical) are taught back-to-back and blur together.
What to do instead
Memorize the automatic-referral list: fungal infection (onychomycosis), bacterial infection (paronychia), redness, swelling, pus, sudden dark streak under the plate, and sudden plate separation. Fix the vocabulary: disorder = may proceed; disease = refuse and refer. If the question contains any of those words, the answer is refuse/refer, not treat.
Selecting a UV cabinet, spray sanitizer, or 'washing with soap and water' as the step that makes a reusable implement safe, and using sanitize/disinfect/sterilize as if they were synonyms.
Salon habit and the word 'sterilize' printed on product packaging blur the three levels of decontamination.
What to do instead
Fix the ladder in memory: cleaning (soap and water, removes debris), disinfection (EPA-registered hospital-grade disinfectant, kills most pathogens on nonporous surfaces), sterilization (kills spores and all microorganisms; only for items that break skin). For exam purposes, reusable implements that touched skin, hair, or blood must be disinfected - never merely sanitized - and a UV cabinet is not a substitute.
Giving the sequence as 'disinfect, then wash,' skipping the wash step entirely, or ignoring the disinfectant label's contact time and dilution.
Organic matter such as hair, skin oil, and debris inactivates the disinfectant, yet the two-step sequence is usually taught once and tested as a sequence.
What to do instead
Say the chain every time: use, clean with soap/detergent and water, dry, completely immerse in correctly diluted EPA-registered hospital-grade disinfectant for the label contact time (commonly 10 minutes), then rinse/dry and store covered. Add the two corollaries: blood or an infectious condition means gloves plus the same two-step; porous items (files, buffer blocks, wooden sticks, cotton, linens) are single-use only.
Answering licensing questions with hour totals, license categories, or salon rules remembered from another state or a national prep app - wrong hours, invented license types, or treating the operator license and the salon/business license as the same thing.
Most circulating study material is national, while New York's appearance-enhancement statute and rules are state-specific.
What to do instead
Build a single index card using only New York State Division of Licensing Services sources: each appearance-enhancement license category and its required training hours, the separate business (salon) license, license display, and inspection/record requirements. If an answer choice cannot be traced to that card, treat it as a distractor.
Answering 'may the licensee...' questions by what the candidate's own salon does ('everyone here does nails') rather than by the scope of the specific license named in the question.
Workplace cross-training and habit override statute; the exam tests the legal boundary of a license, not the shop's custom.
What to do instead
Before answering, name the license held and the service described, then check the statutory definition of that license's scope; if the service falls outside it, the answer is no regardless of training. Close the related gap too: unlicensed practice and aiding it are both violations.