MA Esthetician key terms

Cleaning a surface, tool, or the hands with soap, water, or a sanitizing product to lower the number of germs to a level that public health officials consider safe.

Using a chemical product to destroy most disease-causing organisms on hard, nonporous items and surfaces, though not bacterial spores, after the item has first been cleaned.

The complete destruction of all microorganisms, including bacterial spores, usually by high-pressure steam in an autoclave; it is required for items that penetrate or cut the skin.

The transfer of germs from one person, tool, or surface to another, often by hands, towels, brushes, or implements that were not properly cleaned between clients.

A standardized document supplied with a professional product that lists its hazards, safe handling, first-aid steps, storage requirements, and the protective equipment needed when using it.

An infection-control practice of treating all blood and body fluids as potentially infectious and using gloves, barriers, and handwashing with every client, regardless of appearance or stated health status.

A disinfecting product that carries an Environmental Protection Agency registration number, meaning it has been reviewed and approved for killing the organisms listed on its label.

The Massachusetts state board, operating within the Division of Professional Licensure, that licenses estheticians and salons and enforces the rules governing practice and sanitation.

The legal limits of what an esthetician may perform under the license held; working outside those limits can lead to discipline, fines, or criminal charges.

Permission given by a client after the esthetician explains the service, expected results, possible risks, alternatives, and aftercare, and the client voluntarily agrees to proceed.

A confidential file kept for each client that documents health history, services performed, products used, patch test results, consent, and any reactions or follow-up notes.

The outermost, avascular layer of the skin, built of layered keratin-producing cells; it contains no blood vessels and continuously renews itself from the bottom up.

The layer beneath the epidermis that holds collagen, elastin, blood vessels, nerves, hair follicles, sweat glands, and sebaceous glands, supporting and nourishing the epidermis above it.

The outermost sublayer of the epidermis, made of flattened, dead, keratin-filled cells that form the skin's protective barrier and are shed and replaced continuously.

An oil-producing gland, usually attached to a hair follicle, that secretes sebum onto the skin surface to lubricate the skin and hair and help retain moisture.

The slightly acidic film of sebum, sweat, and shed cells on the skin surface, roughly pH 4.5 to 5.5, which helps limit bacterial growth and protects barrier function.

A plugged hair follicle; open comedones (blackheads) are dark at the surface, while closed comedones (whiteheads) stay covered by skin and feel like small bumps.

An inflammatory condition of the follicles and sebaceous glands involving excess sebum, plugged pores, and bacterial activity, producing comedones, papules, pustules, or cysts.

A chronic inflammatory skin condition causing facial flushing, persistent redness, visible vessels, and sometimes papules, commonly triggered by heat, sun, alcohol, and spicy foods.

Darkening of the skin from excess melanin, appearing as brown patches or spots that may follow sun exposure, inflammation, hormonal changes, or injury.

A six-level classification of skin based on how it burns and tans in response to ultraviolet light, used to estimate sun sensitivity and treatment risk.

The basic classification of skin as normal, dry, oily, or combination, based on oil production and hydration; it is distinct from a temporary skin condition.

Any condition, medication, or circumstance that makes a service unsafe or inadvisable for a client, such as active infection, recent cosmetic surgery, or certain prescription drugs.

A small application of a product to a discreet area of skin, checked after 24 to 48 hours, to detect an allergic or irritant reaction before a full service.

A scale from 0 to 14 that measures how acidic or alkaline a substance is, with 7 being neutral; skin care products are usually formulated near the skin's mildly acidic level.

An ingredient that draws water into the skin or product from the air or from deeper layers, helping to keep the surface hydrated and plump.

An ingredient that softens and smooths the skin by filling the gaps between surface cells with lipids, improving flexibility and reducing roughness and flaking.

A molecule with a water-loving end and an oil-loving end that lets water and oil mix, allowing cleansers to lift dirt, sebum, and makeup from the skin.

A water-soluble acid such as glycolic or lactic acid that loosens the bonds holding dead surface cells together, promoting exfoliation and smoother texture.

Describes an ingredient or product likely to clog pores and add to comedone formation, a key consideration when choosing products for oily or acne-prone skin.

A wax applied and removed without a cloth strip; as it cools it shrinks and grips the hair, making it useful on sensitive or coarse areas such as the face and bikini line.

Putting a wax stick that has already touched a client's skin back into the wax pot, which can contaminate the whole supply and is prohibited in most practice settings.

Planning a balanced eyebrow shape by measuring from facial landmarks, typically the inner eye corner, the outer edge of the iris, and the outer eye corner, before tweezing or waxing.

A service that temporarily dyes the eyelashes to darken them; it requires a patch test and careful eye protection because the product is used near delicate tissue.

A device that gives off filtered ultraviolet light and is used in a darkened room to help reveal dehydration, oiliness, pigmentation, or bacterial fluorescence on the skin.

A direct electrical current used during facials to push water-soluble products into the skin (anaphoresis) or to draw substances out and soothe the skin (cataphoresis).

A mechanical exfoliation treatment that uses a stream of fine crystals or a diamond-tipped wand to remove dead surface cells and improve skin texture and tone.

Suggesting take-home products that support the services performed, chosen from the client's skin analysis, needs, budget, and realistic ability to use them consistently.