Acne-Skin condition that occurs when sebaceous glands become blocked or inflamed to varying degrees.
Alpha Hydroxyl Acids (AHA’s)-Break down desomsomes and allow for easier exfoliation.
Alopecia- Deficiency of hair; baldness.
Astringent- A substance causing contraction of the tissues, controls bleeding and/or checks secretions.
Atopic dermatitis- Also referred to as eczema, a congenital inflammatory skin condition characterized by dry, itchy skin.
Chloasma- In the esthetic industry, referred to as irregular large brown patches on the skin.  I.e.“liver spots”.
Collagen-Fibrous protein.Comedogenic-Tending to promote the formation of comedones.
Comedone- Blackhead, dilated hair follicle filled with bacteria and sebum.
Couperose-Broken capillary condition of the skin.
Cutaneous- Pertaining to the skin, subcutaneous is below the skin’s surface.
Dehydrated-Loss of deprivation of water.
Dermatitis-Inflammation of the skin.
Dyschromia-Abnormal pigmentation of the skin.
Eczema- Commonly referred to as atopic dermatitis, congenital inflammatory skin condition characterized by dry itchy skin.
Edema-Swelling as a result of an accumulation of watery fluid in cells or intercellular tissues.
Effleurage-Stroking movement in massage similar to a friction movement.
Elasticity-Property that allows stretching with the return to its former shape.
Emollient-A product that softens or soothes the surface of the skin.
Glycolic Acid-Derived from sugars, used to treat oily skin.
Herpes simplex-Fever blister, cold sore.
Inflammation-Reaction of the body to irritation with accompanying redness, pain, heat, and also swelling/edema.
Lactic Acid-Derived from milk and sugars, beneficial for hydrating, regulates skin ph, skin friendly.
Laser-Light
amplification by Stimulated Emission of Radiation, a source of intense
radiation of the visible, ultraviolet or infrared portions of the
spectrum.
Lesion-Structural tissue change caused by injury or disease.
Macule-Flat spot of discoloration level with the skin i.e. a freckle.
Melanin-Dark or black pigment in the skin.
Millia-A small sub epidermal keratinous cyst typically on the face.
Neutralization-Change in reaction of a solution from acid or alkaline to neutral.
Rosacea-A chronic inflammatory skin disease that causes facial redness.  Typically symptoms show up any time after age 30.  
Ph number-A measure of the degree of acidity.
Pigment-Any organic coloring matter as that of the hair, skin, and iris.
Pore-Small opening of the sweat glands or hair follicle of the skin.
Psoriasis-A common inherited skin disease with circumscribed red patches covered with white silver scales.
Salicylic Acid-White crystalline acid used as a keratolytic antiseptic and antifungal agent.
Sebaceous glands-Oil glands of the skin.
Seborrhea-Oily condition caused by the over-activity of the sebaceous glands.
Sebum-The fatty or oily secretions of the sebaceous glands.
Slough-To separate, as dead cells from living tissues, to discard.