Essential Safety Tips and Insights for Haircoloring Techniques
School
Creekside High School**We aren't endorsed by this school
Course
SC 101
Subject
Chemistry
Date
Dec 10, 2024
Pages
5
Uploaded by MinisterRamPerson3226
Haircoloring review chapter 211.What are some safety precautions that should be followed? pg 709•Perform a patch test 24 to 48 hours prior to each application of aniline-derivative haircolor. Apply haircolor only if the patch test is negative. •Do not apply haircolor if abrasions are present on the scalp. •Do not apply haircolor if a metallic or compound haircolor is present. •Do not brush the hair prior to applying color. •Always read and follow the manufacturer’s directions. •Use cleaned and disinfected applicator bottles, brushes, combs, and towels.•Protect your client’s clothing with proper draping. •Perform a strand test for color, breakage, and/or discoloration. •Use an applicator bottle or bowl (glass or plastic) for mixing the haircolor. •Do not mix haircolor until you are ready to use it; discard leftover haircolor. •Wear gloves to protect your hands. •Do not permit the color to come in contact with the client’s eyes. •Do not overlap during a haircolor retouch. •Use a mild shampoo. An alkaline or harsh shampoo will strip color. •Always wash hands before and after serving a client.2.What is the difference between between hair color and haircolor? pg 671Haircolor (one word) is a professional, industry-coined term referring toartificial haircolor products and services. Hair color (two words) refers to the natural color of hair. For example, you might say of a client, “Mrs. Bailey’s natural hair color is brown. The haircolor I am giving her is auburn.”3.What are the 3 main parts of the hair? pg 671-672Hair is composed of the following three major components (figure 21-2): •The cuticle is the outermost layer of the hair. It protects the interior cortex layer and contributes up to 20 percent of the overall strength of the hair. •The cortex is the middle layer and gives the hair the majority of its strength and elasticity. A healthy cortex contributes about 80 percent to the overall strength of the hair. It contains the natural pigment called melanin that determines hair color. Melanin granules are scattered between the cortex cells like chips in a chocolate chip cookie. •The medulla is the innermost layer of the hair. It is
sometimes absent from the hair and does not play a role in the haircoloring process.4.Why is hair texture so important when doing a chemical service? pg 672Hair texture is the diameter of an individual hair strand. Large-, medium-, and small-diameter hair strands translate into coarse, medium, and fine hair textures, respectively r. Medium-textured hair has an average reaction to haircolor. Coarse-textured hair has a larger diameter and loosely grouped melanin granules, so it can take longer to process5.How does porosity effect haircolor? Pg 672 Porosity is the hair’s ability to absorb moisture. Porous hair accepts haircolor faster, and haircolor application on porous hair can result in a cooler tone than applications on less porous hair6.Where does melanin live? Melanin are the tiny grains of pigment in thecortex that give natural color to the hair. Pg 230 7.What are 2 types of melanin? Pg 230 r. The two types of melanin are eumelanin and pheomelanin. •Eumelanin provides natural dark brown to black color to the hair and is the dark pigment predominant in black and brunette hair. •Pheomelanin is the lighter pigment that provides natural colors ranging from red and ginger to yellow and blond tones 8.What is the level system and what does it identify ? pg 673 Level is the unit of measurement used to identify the lightness or darkness of acolor. Level is the saturation, density, or concentration of color.9.Where is the best place to find someones natural level? pg 674 Take a½-inch (1.3 centimeter) square section in the crown area and hold it upfrom the scalp, allowing light to pass through 10.How does the level system relate to the color wheel? Pg 674 Identifying natural level is the first step in performing a haircolor service. Your most valuable tool is the color wheel. Haircolor swatch books provide a visual representation as well
11.What gets exposed as you lift the natural hair color ? pg 673 Contributing pigment, also known as undertone, is the varying degreesof warmth exposed during a permanent color or lightening process. Generally, when you lighten natural hair color, the darker the natural level, the more intense the contributing pigment12.3 primary colors are ? Red , blue , and yellow pg 67613.Complementary colors do what? pg 677 Complementary colors neutralize each other (figure 21-13a). When formulating haircolor, you will find that it is often your goal to emphasize or distract from skin tones or eye color.14.What are the hair color categories? Pg 679 Haircoloring products generally fall into two categories: non-oxidative and oxidative 15.How do you know when to choose which categories ? pg 679 Temporary haircolor Creates fun, bold results and easily shampoos from the hair. Neutralizes yellow hair. Semipermanent haircolor Introduces a client to haircolor services. Adds subtle color results. Tones pre-lightened hair. Demipermanent haircolor Blends gray hair. Enhances natural color. Tones pre-lightened hair. Refreshes faded color. Filler in color correction. Permanent haircolor Changes existing haircolor. Covers gray. Creates bright or natural-looking haircolor changes.16.Which is the largest molecule? Pg 680 temporary haircolor has the largest molecule17.What are the non-oxidative haircolors? Two types of nonoxidative colors are temporary colors and semi-permanent colors pg 68018.What are the oxidative haircolors ? Demi permanent and permanent pg 681 19.What are gradual haircolors ? List exampleMetallic haircolors are also referred to as gradual colors. Repeated use of these types of color can create a buildup on the hair causing a grayish or green cast and restrict the application of any chemical service.
20.What are natural haircolors ? List example pg 682 Natural haircolors, also known as vegetable haircolors, such as henna, are colors obtained from the leaves or bark of plants. They do not lighten natural hair color. The color result tends to be weak, and the process tends to be lengthy and messy. Also, shade ranges are limited.For instance, henna is usually available only in clear, black, chestnut, and auburn tones. Because natural haircolors work by staining the cuticle of the hair shaft, a client who has used natural haircolor may bedistressed to find out that many of these chemical products cannot be applied over natural haircolors.21.What is a toner? Pg 685 are traditional semipermanent, demipermanent, and permanent haircolor products that are used primarily on pre-lightened hair to achieve pale and delicate colors. Toners can also be used after dimensional haircolor services.22.What is a developer ? pg 683 also known as oxidizing agents or catalysts, have a pH between 2.5 and 4.5. Although there are a number of developers on the market, hydrogen peroxide (H2 O2 ) is the one most commonly used in haircolor. 23.What ranges do volome come in ? 10, 20 , 30 , and 40 volume 24.List how many levels does each volume of developer lift the hair ? pg 683 10-Volume Used to deposit color or, when less lift is desired, to enhance a client’s natural hair color. 20-Volume Standard volume; will give up to two levels of lift; is used to achieve most results with permanent haircolor and used for complete gray coverage. 30-Volume Used for additional lift, up to 3 levels, with permanent haircolor. 40-Volume Up to four levels of lift with standard hair color. Used with mosthigh-lift colors; provides maximum lift in a one-step color service25. What does temporary haircolor do to the hair? pg 680 non-oxidation colors that make only a physical change, not a chemical change, in the hair shaft, and no patch test is required. Because this nonpermanent color has large pigment molecules that do not penetrate the cuticle layer, only a coating of color is deposited which may be removed by shampooing.26. What does semi permanent haircolor do to the hair ? Pg 680 a no-lift, deposit-only, non-oxidation haircolor that is not mixed with peroxide and is formulated to last through several shampoos, depending on the hair’s porosity. The pigment molecules are small enough to partially penetrate the
hair shaft and stain the cuticle layer, but they are small enough to diffuse outof the hair 27. What does demi permanent haircolor do to the hair? Pg 681 also known as no-lift, deposit-only color, is formulated to deposit but not lighten color. These products are able to deposit without lifting because they are usually less alkaline (or even acid based) than permanent colors and are mixed with a low-volume developer29. What does permanent hair color do to the hair? pg 681 lighten and deposit color at the same time and in a single process because they are more alkaline than demipermanent colors and are usually mixed with a higher-volume developer.30. What is primary haircolors and what are its related colors? pg 676 Primary hair colors are red, yellow, and blue, which are considered the base colors and cannot be created by mixing other colors; when mixed together in different proportions, they produce all other hair colors, including secondary colors like orange (red + yellow), green (blue + yellow), and violet (blue + red31. What is tertiary hair colors and what are its related colors? P6 676 Tertiary hair colors are created by mixing a primary color with its neighboring secondary color on the color wheel, resulting in shades like yellow-orange, red-orange, red-violet, blue-violet, blue-green, and yellow-green; essentially, they are a blend between a primary and secondary color, creating more complex hues 32. How are complementary colors related to each other concerning neutralization ? pg 676 Complementary colors neutralize each other(figure 21-13a). When formulating haircolor, you will find that it is often your goal to emphasize or distract from skin tones or eye color. You may also want to neutralize or refine unwanted tones in the hair. Understanding complementary colors will help you choose the correct tone to accomplish these goals.