AZ Esthetician key terms

Using an EPA-registered chemical product on hard, nonporous surfaces and implements to destroy most pathogenic bacteria, fungi, and viruses, though not bacterial spores. It is the required level for tools that touch only intact skin.

The complete destruction of all microbial life, including bacterial spores, usually by an autoclave using steam under pressure. Estheticians rarely need it, but items contaminated with blood must be handled at this level.

A lower-level cleaning step that uses soap or detergent and water to scrub away visible dirt, oil, and debris and to lower microorganism counts on surfaces, tools, and hands before disinfection.

A standardized document, once called an MSDS, supplied by a product manufacturer that lists ingredients, hazards, first-aid steps, and safe handling instructions. A copy must be kept for every chemical product in the salon.

An infection-control approach in which all blood, body fluids, and non-intact skin are treated as potentially infectious. Gloves and barriers are used with every client, regardless of known health status.

A common class of EPA-registered disinfectants, often called quats, that are diluted with water to soak implements. The solution must be mixed to the labeled strength, tested, and changed according to manufacturer directions.

The outermost, avascular layer of skin, made of layered epithelial cells that constantly renew. It forms the barrier against water loss, irritants, and microbes and contains melanocytes that produce pigment.

The outermost sublayer of the epidermis, made of flattened, keratin-filled dead cells held together by lipids. It is the skin's main protective barrier and the layer most affected by exfoliation and product penetration.

The middle layer of skin beneath the epidermis, containing collagen, elastin, blood vessels, nerves, glands, and hair follicles. It nourishes the epidermis and gives skin strength, thickness, and elasticity.

The deepest skin layer, also called the hypodermis, composed mostly of fat and connective tissue. It cushions bones and organs, insulates the body, stores energy, and holds larger vessels and nerves.

An oil-producing gland usually attached to a hair follicle that secretes sebum onto the skin surface. Sebum lubricates skin and hair, and overactivity contributes to oily skin and acne.

The pigment produced by melanocytes in the epidermis that colors skin, hair, and eyes and helps shield deeper cells from ultraviolet radiation. Uneven production shows up as freckles, sun spots, or dark patches.

A slightly acidic film on the skin surface, roughly pH 4.5 to 5.5, formed by sebum, sweat, and skin cells. It discourages harmful bacteria and supports the barrier; harsh soaps and over-exfoliation disrupt it.

A six-point classification of how skin responds to ultraviolet light, from type I, which always burns and never tans, to type VI, deeply pigmented skin. Estheticians use it to judge treatment and product risk.

A plugged hair follicle. An open comedo, or blackhead, has a dark oxidized plug at the surface; a closed comedo, or whitehead, lies beneath the skin and appears as a small whitish bump.

A chronic inflammatory condition causing flushing, redness, visible vessels, and sometimes bumps, usually on the center of the face. Heat, sun, alcohol, and spicy food trigger it, and aggressive stimulation makes it worse.

Patchy brown to gray-brown facial pigmentation, often on the cheeks, forehead, and upper lip, linked to sun exposure and hormonal shifts. Heat and aggressive exfoliation can darken it further.

Manual removal of comedones and milia from pores using gloved fingers or a metal extractor after cleansing and softening the skin. It requires correct technique, disinfected tools, and a prior contraindication check.

Any condition, medication, or circumstance that makes a service unsafe or inadvisable, such as pregnancy, active infection, or recent isotretinoin use. Finding them during consultation prevents injury and liability.

Removal of dead surface cells mechanically with scrubs, brushes, or crystals, or chemically with acids and enzymes. Overuse damages the barrier and can cause redness, sensitivity, and unwanted pigmentation.

The active growth stage of the hair cycle, when the hair is firmly anchored and growing rapidly. Waxing removes anagen hairs most effectively; hairs in other stages may regrow sooner.

The resting stage of the hair cycle, when growth stops and the hair sits loosely before shedding. Hairs in this phase often release easily during waxing, which is why appointment timing matters.

A stripless wax that shrinks around the hair as it cools and is peeled away without cloth strips. It is gentler on sensitive areas such as the upper lip, underarms, and bikini and grips shorter hair.

A chemical cream or lotion, typically containing thioglycolic acid or a similar agent, that dissolves hair at the skin surface. It does not remove hair from the root and always requires a patch test.

Putting a used wax applicator back into the shared wax pot after it has touched a client's skin, which transfers bacteria. It is prohibited; use single-use applicators or a clean spatula for each dip.

Follicle inflammation caused by a freshly cut hair curling back into the skin or growing beneath the surface, producing red razor-like bumps. Gentle exfoliation and avoiding close shaving help prevent it.

The underlying hue of a person's skin, described as warm, cool, or neutral, which stays constant regardless of surface color. Matching foundation to undertone prevents orange, gray, or mismatched results.

A single synthetic lash bonded to one natural lash with adhesive, placed at least one millimeter from the eyelid. Choosing the right weight and length protects the natural lash from stress and damage.

The main ingredient in most eyelash extension glues, which cures when exposed to moisture in the air. It can irritate eyes and skin, so a patch test, ventilation, and careful isolation are required.

Measuring the face to mark the ideal start, arch, and end points of each eyebrow before shaping. Landmarks such as the inner eye corner and outer iris guide balanced, symmetrical results.

A client's voluntary agreement to a service after being told its benefits, risks, expected outcome, and alternatives in plain language. The discussion and the client's signature are documented in the record.

A questionnaire completed before service that records health history, medications, allergies, past reactions, and skin concerns. It drives contraindication screening and becomes part of the confidential client file.

The services and techniques a licensed professional may legally perform under state law. Working beyond it, such as diagnosing disease or injecting fillers, is illegal no matter how much training someone has.

The ethical and legal duty to keep client information private, sharing it only with those who need it for care or when the law requires. Records, photos, and conversations must be protected and never discussed casually.

The state agency that licenses estheticians, salons, and schools in Arizona, writes sanitation and practice rules, investigates complaints, and disciplines licensees. Its adopted rules carry the force of law.

The license Arizona requires for a salon or spa location before it may offer esthetic or other cosmetology services. It must be current and displayed, and the premises are subject to board inspection.

A licensed professional who rents a station inside a licensed salon and runs an independent business, paying rent instead of earning commission. The renter supplies equipment and handles taxes and insurance.

Coursework a licensee completes to renew a license and stay current on technique, safety, and law. Arizona sets the number of required hours and the subject areas that count toward renewal.