Color Theory What is color?. What is it? Color is the visual perception of the reflection of light.
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Transcript of Color Theory What is color?. What is it? Color is the visual perception of the reflection of light.
![Page 1: Color Theory What is color?. What is it? Color is the visual perception of the reflection of light.](https://reader035.fdocuments.in/reader035/viewer/2022062308/56649c865503460f9493ccb5/html5/thumbnails/1.jpg)
Color Theory
What is color?
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What is it?
• Color is the visual perception of the reflection of light.
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Law of Color
• Only three colors, called primary “pure” colors
Yellow, red and blue
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Secondary Colors
• Two primary colors mixed in varying proportions =
OrangeGreen Violet
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Color Wheel
• 12 –hue color circle created from the three primary colors
• Name of a color referred to as tone or hue, identified by its position on the color wheel.
• Tone can be described as warm, cool or neutral.
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Warm and Cool Colors
• Colors can be classified as either warms or cool colors
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Complementary Colors
• Opposite one another on the color wheel.• When mixed
equally they neutralized each other
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Characteristics of Color
• Color has three main characteristics– Hue- identified based on
it’s position on the color wheel
– Value/level degree of lightness or darkness of a color relative to itself and other colors
– Intensity- the vividness, brightness or saturation within its own level
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Identifying Existing Color
Contributing color +Artificial
Color=Final color
result
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Melanin
• Two types of melanin in the cortex of the hair
• Eumelamin-black pigment
• Pheomelamin- red pigment
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Gray Hair
• Melanocytes slow down production
• Strands lose color• Heredity• Different patterns of
gray• Percentages of gray vary
with individuals
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Applications for Gray
• 75-80% gray hair; adjust color formula to one level darker than desired level
• 25-30% gray; apply a color one level lighter than the desired shade
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Gray Hair
• Pre-soften resistant hair or pre-lighten to increase porosity
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Hair Color Chemistry
• Types of hair color– Non-oxidative-non-
reactive, direct dyes that only coat the surface of the hair shaft/ nothing to lighten and no chemical changes occur. Certified colors used in foods, drug and cosmetics last until shampooed out
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Non-Oxidative Color
• Semi-permanent– Last through several
shampoos, dye molecules in solution capable of penetrating the cuticle layer, smaller in size, slightly alkaline.
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Oxidative Hair Color
• Demi-uses low volume peroxide developer, only add color to the hair, cannot lift hair color
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Permanent Hair Colors
• Combined with peroxide, chemical reaction occurs
• Small molecules penetrate the hair, oxidize in the cortex and link to form a permanent colored molecule
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Permanent Hair Colors
• Also referred to as aniline derivative tints/ penetrate the cuticle and cortex, remain until they are removed by chemical means, hair grows out and is cut off.
• Main ingredient is paraphenylene diamine
24 hour patch test mustBe given before any permanentHair color applicationTo ensure the client is notAllergic to the product
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Lighteners
• Bleaching or de-colorizing, used when a lighter hair color is desired
• Involves the oxidation of the natural melanin in the hair.
• Hair goes through several stages of color changes as it is lightened
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Types of Lighteners
• On-the-scalp lighteners– Gentle can be applied
directly on the scalp• Oil lighteners pH 9• Cream lighteners pH 9
Off- the- scalpPowder bleach, alkaline
salts and strong oxidizing agents. Stronger than oil or cream
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Developers
• Hydrogen peroxide (H²O²) most common oxidizing agent
• Volume = amount of oxygen gas removed from solution. Also called developer
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Vegetable, Metallic and Compound Dyes
• Not professionally used• Contain vegetable dyes• Metallic salts and or
combination of the two• Henna• Interfere with other
professional beauty services
• Can be toxic to the client and the operator