MS Cosmetology key terms

The state agency that licenses cosmetologists, nail technicians, estheticians, and salons in Mississippi, sets sanitation and practice rules, and handles complaints, inspections, and disciplinary action against licensees.

The legal permission to practice a regulated occupation, granted after meeting required training hours, passing a written and practical examination, and paying fees; practicing without it is unlawful in Mississippi.

The specific services and procedures a license holder is legally permitted to perform; doing work outside that boundary, such as a cosmetologist performing services reserved for another license type, can bring discipline.

The legally enforceable requirements for cleaning, disinfecting, and storing tools and equipment, hand washing, and keeping work areas clean; inspectors check compliance and violations can lead to fines or license action.

Any microorganism, such as a bacterium, virus, or fungus, capable of causing disease. In the salon, pathogens spread through contaminated tools, hands, linens, and surfaces, so breaking that chain is the core purpose of infection control.

The presence of infectious material such as blood, pus, or other body fluids on a surface or tool. Contaminated items must be cleaned and then disinfected or discarded before reuse.

Using an EPA-registered hospital-grade product at the correct dilution and contact time to destroy most harmful microorganisms on nonporous implements. It does not reliably kill bacterial spores, so it is not the same as sterilization.

A process that destroys all microbial life, including bacterial spores and viruses, usually through an autoclave using steam under pressure. It is required for items that contact broken skin or are reused invasively.

Treating all blood, body fluids, and potentially infectious materials as if they carry disease, regardless of what is known about the client. Gloves and other barriers are used consistently with every client.

A Safety Data Sheet summarizes a product's hazards, safe handling, first aid, and storage requirements. Federal rules require these sheets to be kept accessible in the workplace for every hazardous chemical used.

The outermost, avascular layer of skin made of stratified epithelial cells. Its basal layer produces new cells that move upward and flatten, eventually forming the protective outer surface.

The layer beneath the epidermis that contains blood vessels, nerves, glands, and hair follicles. Because it supplies nutrients, damage reaching this layer can cause scarring and infection.

The outermost sublayer of the epidermis, composed of flattened, keratinized cells that protect against water loss and injury. Products that soften or swell these cells affect how the skin feels and how chemicals penetrate.

A tube-shaped pocket in the skin from which a hair grows. Its shape determines whether hair is straight, wavy, or curly, and its attached structures supply oil and respond to hormones.

A gland attached to the hair follicle that secretes sebum, an oily substance that lubricates hair and skin. Overactivity contributes to oily scalp and acne; underactivity contributes to dryness and flaking.

The tough fibrous protein that makes up hair, nails, and the outer skin layer. Its cross-links and disulfide bonds give hair strength and shape, and chemical services work by altering those bonds.

A strong chemical link between sulfur atoms in adjacent keratin chains that holds hair in its shape. Relaxers and permanent waves break these bonds and reform them in a new configuration.

A scale from 0 to 14 measuring acidity and alkalinity, with 7 neutral. Hair and skin are mildly acidic, and products far from that range, such as relaxers and lighteners, can swell the cuticle and cause damage.

The outermost layer of the hair shaft, made of overlapping scale-like cells. When it lies flat, hair looks smooth and shiny; when it is raised or damaged, hair feels rough and loses moisture.

The middle and thickest layer of the hair shaft, containing the pigment melanin and the bonds that give hair strength and elasticity. Color and texture depend heavily on its condition.

Partial or complete hair loss, which may be temporary or permanent and can result from genetics, illness, medication, stress, or harsh chemical services. A cosmetologist should recognize it and refer clients to a physician.

An infestation of lice on the scalp or body, spread by direct contact or shared items. It is contagious, so the service must be refused and the client referred for treatment; tools and linens require special handling.

Dividing hair into controlled, even subsections before cutting, coloring, or styling. It keeps work organized, ensures balance, and prevents missed areas or uneven results.

The angle at which hair is held away from the head while cutting. Holding hair flat produces a solid form, while lifting it creates graduation or layers and affects the final shape.

The first section of hair cut to a chosen length, used as the reference for all following sections. A stationary guide stays fixed; a traveling guide moves along with each new cut.

A product, usually highly alkaline, that straightens curly hair by breaking disulfide bonds and rearranging them. Improper strength, timing, or overlapping can cause scalp burns and hair breakage.

A small amount of product applied to skin, usually behind the ear or in the elbow crease, to check for an allergic reaction before a full service. Results are read after the manufacturer's stated waiting period.

Removing natural or artificial pigment from hair by using an alkaline product that oxidizes melanin. The process lifts through stages from dark to pale, and over-processing weakens the hair and irritates the scalp.

A hydrogen peroxide solution mixed with color or lightener to activate it and open the cuticle. Its volume strength controls how much lift or deposit occurs and how much damage is possible.

The hard, visible portion of the nail made of keratinized cells, resting on the nail bed. Its condition reveals health clues, and damage to it can cause pain or infection.

A fungal infection of the nail that causes thickening, discoloration, and crumbling. It is contagious, so the service should be refused and the client referred to a physician; implements require thorough disinfection.

A structured assessment of a client's skin type, condition, and sensitivities before a facial or product application. It guides product choice, service length, and which areas to avoid.

A classification of skin types based on how skin responds to ultraviolet exposure, ranging from very fair to deeply pigmented. It helps predict burning risk and guides safe use of treatments and waxing.

A conversation before a service that identifies the client's goals, history, allergies, and expectations, and confirms what will be done. It documents consent and reduces misunderstandings and liability.

A client's agreement to a service after being told what it involves, its risks, and alternatives. Obtaining it before chemical or invasive services protects both the client and the practitioner.

The professional duty to keep a client's personal and health information private. It builds trust, is expected by law and ethics, and means records should not be shared without permission.

Recommending and selling take-home products that support the salon service. Effective selling is based on the client's identified needs and builds repeat business and income.