Beautybyumar.com has provided a Glossary of standard hair definitions to facilitate your learning.
BBU Words for Glossary
Color Base: Refers to the color of the.
Color lift: The amount of change hair undergoes when lightened to remove pigment.
Dense: The number of hair strands per square inch.
Deposit: The ability for the color to deliver pigment into or onto the hair strand.
Deposit-only Color: Color that will only stain the hair surface. It will not lift the color out of the hair and oxidizes at a lower volume.
Depth: Darkness or shadows in hair color that gives the hair contrast.
Developer: Oxidizing agent, that when mixed with ammonia, will allow the color to penetrate through the cuticle layer.
Development Time or Oxidation period: Time it takes for color to lift cuticle and deposit color.
Diffused: When the concentration is diluted. Visually dispersed, not limited to one area of the hair.
Direct dye: Type of color that will stain the cuticle and does not require oxidation.
Discoloration: Loss of pigment or color.
Double process: Two chemical processes in a single service time i.e. root touch-up and highlights.
Drab: Describes hair color that lacks warmth (Red and Gold).
Dull: Lack-luster, lacks shine or vibrancy.
Dye: Generic term used for artificial color.
Elasticity: Measures the amount of stretch or buoyancy the hair has before it will snap.
Enzyme: a protein that kick starts a chemical process.
Fade: Loss of artificial color over a period of time.
Fillers: Adding artificial color in place of natural pigment when going darker.
Formulas: The specific code of color used when performing a color service.
Hair Color: Artificial or natural pigment and tone of the hair.
Hair Root: where the bulb of the hair strand lives.
Hair shaft: the strand of hair that contains the cuticle, cortex, and medulla layer.
Hard water: Water that contains a lot of minerals and agents that can cause build-up on hair.
Henna: a permanent hair color that creates a coating on the hair shaft. This color is extracted from plants.
High-lift tinting: Removing natural pigment in hair with a high ammonia content permanent color.
Highlighting: Technique used to remove natural pigment in hair and create dimension in hair color.
Keratin: Primary protein that gives hair its strength.
Lift is the amount of lightness achieved when removing natural pigment from the hair.
Lightner: Chemical used to remove natural and artificial pigment from the hair.
Line of demarcation: obvious line is the difference of hair color or new growth.
Medulla: innermost layer of the hair strand.
Melanin: Natural pigment found in skin, hair, and eyes.
Metallic Dye: the combination of metals that by gradual build-up and exposure to oxygen, create color on hair.
Neutral: Cancelling out an unwanted tone.
Neutralization: Stopping a chemical process by bringing the pH of the hair back to normal levels.
Neutralize: see Neutralization.
New Growth: Hair that has grown from the scalp and needs to be colored.
Non alkaline: Has high acidity on the pH scale.
Off-the-scalp lightener: Overall bleach-out that will not touch the scalp.
On-the-scalp lightener: Bleach-out that will sit directly on the scalp.
Opaque: The amount of light that can shine through.
Outgrowth: Same as new growth.
Overlap: Layering color or lightener onto previously processed hair.
Overporosity: Cuticle is damaged and remains open and extremely absorbent.
Oxidation: Oxygen causes the start of a chemical reaction.
Oxidative hair color: Hair color that will continue to lose strength the longer it is exposed to oxygen.
Para tint: Oxidative dyes that make a color.
Patch test: Testing for skin reactions before beginning a new chemical service.
Penetrating hair color: Hair color that penetrates the cortex and sits in the cuticle layer.
Permanent hair color: Hair color that penetrates the cortex and sits in the cuticle layer permanently.
Peroxide residue: Peroxide that gets left in hair following a lightening service.
Persulfate: Used in developers and activators to accelerate the lifting process.
pH: Measurement of the acidity or alkalinity of hair color.
Pheomelanin: Gives hair red, yellow pigment.
Pigment: Describes the specific colors seen in hair.
Porosity: How open or closed the cuticle layer sits to measure absorbance.
Powder Lightener: Type of lightener that must be mixed with the developer to activate.
Pre-lighten or Pre-bleach: Lifting hair before you deposit a color.
Primary Color: Red, Blue, Yellow are the primary colors that make up all other colors.
Processing Time: The amount of time it takes a chemical reaction to complete.
Progressive Dye: Does not lose absorption or depositing strength with time.
Regrowth: Hair that has grown after receiving a complete color service.
Resistant hair: Hair that is stubborn and does not take easily to color.
Retouch: see touch-up.
Specialist: An expert in a particular field or process or technique within a field.
Spectrum: a range of possibilities for one topic.
Spot Lightening: isolated section or area of hair to lighten.
Stabilizer: Agent that calms a volatile chemical.
Stage: describes the current level that hair is at, as it goes through the lightening process.
Stain Remover: Removing artificial hair color from clothes or skin where color may have stained.
Strand Test: Adding lightener or hair color to an isolated section before committing to an entire color service to see how the lightener reacts.
Stripping: Removing color from hair, usually artificial.
Salt- and- pepper: Hair that has not completely turned white. It is a mixture of black and white hair.
Secondary Color: the combination of mixing primary colors to make, purple, orange, and green.
Semi-permanent hair color: Hair color that does not completely penetrate the cuticle layer, used to tone pre-lightened hair.
Sensitivity: skin reactions to chemical processes.
Shade: variable of the same color.
Sheen: reflection or shine of hair.
Single-process Hair Color: doing one color service in an appointment.
Softening agent: product used prior to chemical services to help absorption during the chemical process. This product will swell the cuticle, making it more readily to absorb.
Solvent: Liquid that allows other components to dissolve.
Temporary Hair Color: Hair Color that will fade within a few washes. This hair color does not penetrate the cuticle layer.
Terminology: Words used to describe.
Tertiary Color: Colors that have been mixed on the color wheel, originating with mixing primary and secondary colors together.
Texture: How the hair feels.
Tint: Permanent color that is able to remove natural pigment and deposit artificial color.
Tint back: Using artificial color to go back to hair’s natural color.
Tone: The hue or underlying shade of hair color
Touch-up: coloring of your new growth, usually about an inch from the scalp.
Unpigmented hair: Hair that has lost melanin.
Undertone: See tone.
Urea peroxide: Type of peroxide that when mixed with an alkaline liquid, will release oxygen.
Vegetable color: Hair color that is derived from vegetable plants.
Virgin hair: Hair that has never had any chemical processes done to it.
Viscosity: How thick a solution is.
Volume: How big the hair grows from the scalp.
Warm: Describes the tone of the hair. Warm colors usually have a red, orange, or yellow undertone.