MN Esthetician key terms

A process that destroys most harmful microorganisms, though not bacterial spores, on hard nonporous surfaces and implements using a product labeled for that purpose. Estheticians disinfect work surfaces, tools, and equipment between every client.

The complete destruction of all microbial life, including bacterial spores, typically achieved with an autoclave using high-pressure steam. Tools that contact blood or broken skin require sterilization rather than ordinary disinfection.

The lowest level of decontamination: washing with soap, detergent, and water to physically remove dirt, oils, and many microorganisms from surfaces, linens, tools, and hands. Sanitation is done before disinfection or sterilization can work properly.

A product registered with the U.S. Environmental Protection Agency and labeled hospital-grade, meaning it is proven effective against a broad range of pathogens. It must be mixed at the stated dilution and left wet for the full contact time.

A standardized document from a product manufacturer listing a chemical's hazards, safe handling, first-aid measures, and storage requirements. Salons must keep an SDS available for every professional product on the premises.

An infection-control approach in which all blood, body fluids, and non-intact skin are treated as potentially infectious, so gloves and other barriers are used with every client. It removes the need to guess who might carry disease.

The outermost, avascular layer of the skin, made of layered keratin-producing cells. It has no blood vessels, depends on the dermis for nourishment, and is where most topical esthetic products do their work.

The thicker middle layer of skin beneath the epidermis, holding collagen and elastin fibers, blood vessels, nerves, hair follicles, and glands. Its condition largely determines firmness, elasticity, and what esthetic treatments can improve.

The outermost sublayer of the epidermis, made of flattened, keratin-filled dead cells that form the skin's main barrier. Its thickness and moisture level affect how products penetrate and how smooth the surface appears.

A cell in the deepest layer of the epidermis that produces melanin, the pigment giving color to skin, hair, and eyes and helping shield cells from ultraviolet damage. Its activity explains tanning and many pigment disorders.

A gland usually attached to a hair follicle that secretes sebum, an oily substance lubricating skin and hair. Overactivity contributes to oily skin, clogged pores, and acne, while underactivity leaves skin dry.

The slightly acidic film on the skin surface, roughly pH 4.5 to 5.5, formed by sebum, sweat, and skin lipids. It slows bacterial growth and supports barrier function, and harsh cleansers or over-exfoliation can disrupt it.

A six-category scale classifying skin by how it burns or tans after ultraviolet exposure, from very fair type I to deeply pigmented type VI. Estheticians use it to anticipate reactions and adjust treatment intensity.

A client's baseline classification, usually oily, dry, normal, combination, or sensitive, based on oil production and moisture levels. It is distinct from skin condition, which is a temporary state such as dehydration or breakouts.

Any condition, medication, or circumstance that makes a service unsafe or inadvisable, such as pregnancy, an active cold sore, or recent isotretinoin use. Finding them during consultation prevents harm and professional liability.

A record completed at the first visit that captures health history, medications, allergies, prior treatments, and contact details. It documents the information behind informed consent and supports safe service decisions.

A series of light, gliding massage strokes applied in the direction of muscle fibers or toward lymph nodes. It opens and closes most facial massages, relaxing the client and encouraging circulation.

Massage movements that knead, lift, squeeze, and roll tissue, usually applied to the neck, shoulders, and upper back rather than the delicate face. It releases muscle tension and increases local blood flow.

Manual removal of clogged pores using gloved fingers wrapped in tissue or a sterile extractor, after the skin has been softened with warm steam. Only surface congestion is removed; deep or inflamed lesions are left alone.

Cleansing in two steps: first with an oil-based balm or cleanser to dissolve makeup and sunscreen, then with a water-based cleanser to remove sweat, dirt, and residue. It is a standard opening step in professional facials.

The active growth phase of the hair cycle, when new hair is being produced and the follicle sits deepest in the skin. Waxing during this phase can give longer-lasting results but may feel more uncomfortable.

A wax that firms without cloth strips and is lifted away once set, gripping hair more than skin. It is favored for sensitive areas such as the brows, lip, underarms, and bikini line.

A small application of a product to a discreet area of skin, observed for 24 to 48 hours before full use, to reveal an allergic or irritant reaction. Wax, tint, and lash adhesive services commonly require one.

Inflammation or infection of a hair follicle that shows up as red bumps or small pustules. It can follow waxing or shaving and is a reason to postpone further hair removal in that area.

The fast-bonding main ingredient in most eyelash extension glues, which cures in the presence of moisture. It can irritate eyes and skin, so patch testing, ventilation, and keeping the client's eyes closed matter.

A service that softens and reshapes natural lashes around a silicone shield so they curl upward for several weeks. Careful timing and a prior patch test prevent over-processing and irritation.

Applying semi-permanent dye to brow hairs to darken, define, or fill them in. A patch test 24 to 48 hours beforehand is standard practice because reactions to brow and lash tint can be severe.

Colors sitting directly opposite each other on the color wheel, such as red and green or blue and orange, which cancel each other when combined. Makeup artists use them to hide discoloration, for example green over redness.

The subtle underlying hue of a person's skin, described as cool, warm, or neutral, which stays the same regardless of surface color or tan. Matching foundation to undertone prevents shades that look orange or ashy.

A water-soluble acid such as glycolic or lactic acid that loosens the bonds holding dead cells together, increasing exfoliation and smoothing texture. AHAs raise sun sensitivity, so client education and sun protection are required.

A lipid-soluble acid, most commonly salicylic acid, that exfoliates on the surface and inside the pore. It suits oily and acne-prone skin and is avoided for clients with aspirin allergy.

A controlled application of an exfoliating acid or enzyme preparation that removes outer skin layers to improve texture, tone, and pigmentation. Product strength, neutralization, and client selection all determine whether it is safe.

An exfoliating treatment using plant enzymes such as papain or bromelain that digest dead surface cells without a strong acid action. It is gentler than an acid peel and often chosen for sensitive or mature skin.

A client's agreement to a service after being told what it involves, the expected results, the risks, alternatives, and cost, freely and without pressure. Documenting it protects both the client and the practitioner.

The services and activities a licensee is legally allowed to perform under a specific credential, as defined by state law. Working outside it, such as diagnosing a skin disease, is unlawful.

The ethical and legal duty to keep a client's personal, health, and treatment information private, sharing it only with permission or when the law requires. Records must be stored securely and discussed only as needed.

The state agency that licenses and regulates cosmetologists, estheticians, and salons in Minnesota, writes rules, and handles complaints and discipline. Licensees must know and follow its statutes and rules.

The periodic process of keeping a professional license active by submitting required information and fees and meeting continuing education rules before the expiration date. Working on a lapsed license is illegal.