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Coloring Chemistry Test Review - 1

Coloring Chemistry Test Review - 1. Chp . 12 – Small Book Chp . 19 – Large Book Notes. ANSWER KEY. 1. What is a color mask ?. a product that coats the cuticle of the hair with temporary color. 2. TRUE or FALSE Color Masks are oxidative tints . FALSE.

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Coloring Chemistry Test Review - 1

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  1. Coloring ChemistryTest Review - 1 Chp. 12 – Small Book Chp. 19 – Large Book Notes

  2. ANSWER KEY

  3. 1. What is a color mask? a product that coats the cuticle of the hair with temporary color

  4. 2. TRUE or FALSEColor Masks are oxidative tints. FALSE

  5. 3. List some examples of products which are color masks. • Spray-on color • Hair mascara • Shampoo-in hair colors and rinses • Hair mousses or gels with color

  6. TRUE or FALSE4. Color masks don’t change natural melanin, they just hide it. TRUE

  7. TRUE or FALSE5. Color masks are all non-oxidative hair coloring products. TRUE

  8. 6. List the 3-Main categories of non-oxidative hair coloring products. 1. temporary 2. semi-permanent 3. permanent

  9. 7. List the 2-Main categories of oxidative hair coloring products. 1. permanent 2. demi-permanent

  10. 8. List one example of a permanent, non-oxidative hair color Henna

  11. 9. What are the main differences between non-oxidative permanent tintsand oxidative permanent tints non-oxidative permanent tint • deposit only • NO lift • NO chemical change to the melanin • oxidative • permanent tint • lifts and deposits • chemically changes • the natural melanin

  12. 10. A comparison of some general characteristics of oxidative and non-oxidative tints Oxidative Tints Non-oxidative tints • Enters cortex • Decolorizes melanin • Needs oxidizing agent • Deposits color • Lifts color • Pre-made pigment molecules YES NO YES NO YES NO YES YES YES NO YES NO

  13. 11. What is the MOST commonalkalizing agent? Ammonia, NH3

  14. 12. List 2 things that an alkalizing agent does during the oxidative hair-coloring process. • swells the cuticle to allow the dye precursors into the cortex • destabilizes the H2O2 so that it begins to release oxygen

  15. 13. What the heck is a dye precursor?!? A chemical that is transformed into a pigment molecule once it has entered the hair cortex Precursor means ‘something that comes before’

  16. TRUE or FALSE14. A developer is the same thing as an oxidizing agent. TRUE

  17. 15. What is the role of an oxidizing agent (developer) in the hair coloring process? • As an oxidizer it decolorizes the natural melanin • As a developer it helps to develop the final dye molecules (pigments)from the dye precursors

  18. 16. How does the oxidizing agent decolorize the melanin? It chemically alters the structure of the melanin so that it reflects light differently than before……………. ……………the more light the melanin reflects the lighter the hair looks

  19. 17. How does the developer go about developing the final pigments? It causes the primary intermediates and the modifiers to ‘get together’ to create the final dye molecules

  20. 18. What is the MOST common oxidizing agent (developer)? Hydrogen peroxide, H2O2

  21. 19. In oxidative tints, ___ create the dye molecules but only in primary colors Primary intermediates

  22. 20. In oxidative tints, ___ join the primary intermediates to make dye molecules in secondary and/ or tertiary colors modifiers (A.K.A. –couplers)

  23. 21. In oxidative tints, what are the 2 MAIN JOBS of antioxidant stabilizers? • stop final dye molecules from accidently forming in the bottle • slow down the oxidizer (developer)

  24. 22. In an oxidative tint, why does the oxidizer need ‘slowed down’? So that the final dye molecules do not form until they are in the cortex of the hair

  25. 23. What are at least 3 other names by which oxidation hair colors are known? 1.progressive hair colors (or dyes) 2.aniline derivative tints (or dyes) 3. Permanent hair colors (tints or dyes)

  26. 24. A measure of the thickness or thinness of the hair coloring liquids is known as ___. viscosity • More viscous = thicker • Less viscous = thinner

  27. TRUE or FALSE25. Temporary hair color dye molecules are already formed in the bottle and are too big to get into the cortex TRUE

  28. TRUE or FALSE26. Permanent (oxidation) hair color dye molecules are NOT already formed in the bottle, and once formed they are too big to get back out of the cortex. TRUE

  29. 27. A comparison of 2 kinds of non-oxidative tints: Semi-Permanent Temporary some in cortex none in cortex No alkalizing agent Sometimes an alkalizing agent No affinity for keratin YES, affinity for keratin SMALL dye molecules LARGE dye molecules

  30. 28. Would a 20 volume or a 40 volume peroxide be better if “lifting” is the goal? 40 volume b/c the higher the volume the greater the lift

  31. 29. What is meant by “color cannot lift color”. It is the oxidizer that does the “lifting” of the color…… ……..the actual dye molecules can only deposit color

  32. 30. Can a very dark brunette be ‘dyed’ blonde? NO

  33. 31. How does a very dark brunette get to be a blonde? Step 1: color is “lifted”in a bleaching process by an oxidizer Step 2: new color is “deposited” in the bleached hair by the tint

  34. 32. Write one sentence that connects the words fillers, porosity gradient, andcoloring. Fillers ‘fill in’ the holes of the porosity gradient to help the hair take color more evenly during the coloring process. (Dye molecules often ‘fill up’ holes and make a darker area so that the hair colors unevenly.)

  35. 33. Enzymes also cause the H2O2 to release oxygen, they cause less cuticle damage, and often require shorter processing time. Why aren’t they more commonly used during the coloring process? They have a very short shelf life and by the time you are ready to use them they are no good any more

  36. TRUE or FALSE34. An oil-based color remover is a good choice to remove an oxidative tint. FALSE They can’t even get past the cuticle to get into the cortex where the oxidative dye molecules are

  37. TRUE or FALSE35. A dye solvent would be a good choice to remove a metallic dye from a client’s hair. FALSE Dye solvents have a violent reaction with the metals in metallic dyes….so violent it can literally ‘melt, client’s hair….to say nothing of what it would do to the skin on their scalp!

  38. 36. Match the word with the correct definition: carcinogen teratogen mutagen _____ 1. capable of damaging genetic material _____ 2. capable of causing cancer _____ 3. capable of damaging developing fetus c. a. b.

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