IN Esthetician common mistakes
IN Esthetician · Understand the traps and how to avoid them.
Treating disinfection as a substitute for cleaning: dropping a implement into disinfectant while it still carries wax, oil, or skin debris, then using it on the next client.
Candidates memorize the disinfectant product name and contact time but skip the step order, so they picture 'dirty tool goes in jar' rather than the full cleaning-then-disinfecting sequence. State board questions test the sequence, not just the chemical.
What to do instead
Drill the fixed order as a chant: wash with soap and water, dry, then fully immerse in an EPA-registered hospital disinfectant for the label contact time, then store covered. Practice writing the four steps for each implement type (tweezers, comedone extractor, spatula, brush) and state which items are single-use only.
Describing the epidermis as a single layer or confusing the order of its strata, especially placing the stratum corneum below the stratum granulosum.
Candidates learn the layer names as a list without a spatial picture, and the Latin roots (corneum = horny, granulosum = grainy, spinosum = spiny, basale = base) are not connected to position or function.
What to do instead
Build the stack from the bottom up and tie each name to what it does: basale (mitosis, melanocytes), spinosum (spiny, immune Langerhans cells), granulosum (keratohyalin, water barrier), lucidum (palms and soles only), corneum (dead keratinized cells that shed). Recite it in both directions and note where melanocytes and Langerhans cells live.
Naming a skin condition without classifying it: calling a papule a pustule, labeling telangiectasia as rosacea, or identifying a mole as a freckle.
Candidates study lesion vocabulary as definitions but not as visual contrasts, so near-miss pairs (macule vs. patch, papule vs. nodule, vesicle vs. bulla) collapse together under exam pressure.
What to do instead
Make a comparison table of primary lesions with three columns: size, whether it is raised or flat, and whether it contains fluid. Then add a 'do not treat, refer' column for suspicious pigmented lesions, undiagnosed rashes, and anything with irregular borders. Practice spotting the distinguishing feature in each description.
Performing a skin analysis without a consultation and consent step, or skipping the client intake questions about medications, allergies, and recent cosmetic procedures.
Practical training often emphasizes the hands-on analysis sequence, so the paperwork and questioning steps feel like administrative overhead rather than a legal and safety requirement.
What to do instead
Memorize the intake checklist: current medications (especially isotretinoin and blood thinners), allergies, pregnancy, recent waxing or peels, sun exposure, and known skin conditions. Know that a client on isotretinoin should not be waxed, and build a habit of documenting consent and contraindications before touching the skin.
Waxing against the direction of hair growth, or re-dipping the same spatula into the wax pot after it has touched a client.
Candidates focus on getting a smooth strip and forget the two rules that matter for results and sanitation: hair is removed in the direction of growth and a used spatula never returns to the pot.
What to do instead
State the rule as a pair: apply with the grain, remove against the grain, and hold skin taut. For the pot, use a single-use spatula or a clean one each time, and know that double-dipping is a sanitation violation regardless of wax temperature. Practice describing a full leg wax sequence in order.
Applying strip lashes or lash extensions without a patch test or without checking for adhesive sensitivity and eye conditions.
The service looks cosmetic and low-risk, so candidates skip the pre-service screening and the adhesive patch test timing that exam questions probe.
What to do instead
Learn the patch test window for the specific adhesive (typically 24 to 48 hours before the first application) and the list of conditions that rule out the service: active eye infection, styes, conjunctivitis, recent eye surgery, and known cyanoacrylate allergy. Know that lash extension adhesive must never contact the skin or the eye itself.
Reading an ingredient list and assuming the first-listed ingredient is the active one, or treating 'natural' and 'hypoallergenic' as regulated safety claims.
Candidates conflate the order of ingredients (descending by concentration) with function, and marketing terms feel like guarantees rather than unregulated descriptors.
What to do instead
Memorize that ingredients are listed in descending order of concentration, with colorants and fragrances allowed at the end regardless of amount. Learn the roles of humectants, emollients, and occlusives, and know that 'natural' and 'hypoallergenic' have no standardized legal definition in the U.S., so they cannot be relied on as safety assurances.
Mixing up the scope of an esthetician license with what requires a physician: performing a deep chemical peel, laser treatment, or injecting anything.
Candidates study the law section as a list of rules rather than as a boundary line, so they cannot sort a procedure into 'esthetician may perform' versus 'medical supervision required.'
What to do instead
Build a three-column sort: services within an esthetician's scope (facials, waxing, makeup, basic extractions, superficial peels where allowed), services requiring medical direction, and prohibited services. Anchor each item to the Indiana rule that defines the practice of esthetics, and check the current Indiana Professional Licensing Agency materials for updates.
Ignoring the difference between sanitation, disinfection, and sterilization, and using the words interchangeably in scenario questions.
The three terms sound like synonyms in everyday speech, and candidates never lock down which one applies to which object or surface.
What to do instead
Define each with its target: sanitation reduces pathogens on surfaces to a safe level, disinfection destroys most pathogenic organisms on implements but not spores, sterilization destroys all microbial life including spores. Then match each to its object class: work surfaces and linens vs. reusable implements vs. items that penetrate skin.
Handling client records, service notes, and photos casually, including discussing a client's skin condition with others or posting before-and-after images without written permission.
Candidates treat ethics as a soft topic and do not connect confidentiality and consent to specific exam scenarios about records and social media.
What to do instead
Learn the practical rules: keep service records confidential, obtain written consent before photographing or publishing a client's image, and never disclose a client's condition to a third party without authorization. Practice answering scenario questions by naming the specific obligation (consent, confidentiality, or scope of practice) rather than giving a general answer about professionalism.