Most Effective Types of Hair Dye and After-Care Treatments
Caitlin Boback and Kyla Semones Cousino High School
Slide 2
Purpose To find the best types of hair dyes and treatments in
order to limit the damage exerted on hair when chemically processed
2
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Background Hair Structure 3
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Treatments Hair dyes Ammonia-free Ammonia-based After-care
treatments Coconut oil and egg yolk Store bought deep conditioner
4
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How Hair Dye Works Ammonia (alkaline) swells the hair cuticle
by raising the pH level In ammonia-free dye, monoethanolamine (MEA)
is used 5
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How Hair Dye Works Dye is mixed with hydrogen peroxide
Molecules enter the cortex through raised cuticle Ammonia-free
Ammonia 6
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How Hair Dye Works Hydrogen peroxide breaks down Peroxide
breaks the bonds of pre-existing color Oxygen bonds to and oxidizes
the colorless molecules of the hair dye Oxidized molecules swell
and become colored due to reaction 7
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After-care Treatments Necessary after chemically processing
hair Product bonds to the scales of the cuticle and neutralizes the
pH level Water based products 8
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Problem Statement Which types of hair dyes and reconditioning
treatments are best for hair health? 9
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Hypothesis Least damaging hair dye Ammonia-free Most effective
treatment Coconut oil and egg yolk 10
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Materials Force Sensor After-Care Treatments Hair Dyes 11
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Procedure Collect and measure hair samples Dye hair samples
with ammonia or ammonia-free hair dye Treat samples with a deep
conditioner or an oil and egg yolk treatment Let dry overnight
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Procedure Hair samples were split into groups Ammonia Ammonia
free Untreated (control) 13
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Procedure 14
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Procedure 15 Max: 0.6706
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Data Measured Tensile Strength (Newtons) Force Sensor Diameter
of hair (mm) Caliper 16
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Data Analysis Two-sample t-test Ammonia vs. Ammonia free Deep
conditioner vs. Oil and egg on ammonia Deep conditioner vs. Oil and
egg on ammonia-free 17
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Data Analysis Assumptions Normal distributions Simple random
samples Independent groups 18
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Ammonia vs. Ammonia-Free 19
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Ammonia vs. Ammonia-Free P-value = 0.000082 Null hypothesis
rejected 20
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Ammonia: Deep Conditioner vs. Oil 21
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Ammonia: Deep Conditioner vs. Oil P-value = 0.0196 Null
hypothesis rejected 22
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Ammonia-Free: Deep Conditioner vs. Oil 23
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Ammonia-Free: Deep Conditioner vs. Oil P-value = 0.5840 Fail to
reject null hypothesis 24
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Conclusion Least damaging hair dye Ammonia-free hair dye Most
effective treatment Coconut oil and egg yolk Treatments were
equally effective on ammonia free dyed hair 25
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Conclusion Ammonia-free hair dye does not open the cuticle as
much as ammonia This allows less protein and moisture loss when
compared Ammonia-free hair dye does not work as well, but causes
less damage 26
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Conclusion The main ingredient in commercial products is water
Coconut oil is rich in lauric acid High affinity for proteins Low
molecular weight allows for easy access into cortex Egg yolk easily
bonds to cuticle scales and seals them 27
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Related Research Richard Beyak Commercial after-care treatments
US Food and Drug Administration Hair dyes 28
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Application Ammonia hair dye in salons Costs Odd combination of
egg and oil 29
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Flaws Binder clip Water temperature Hair dye 30
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Future Research Different humidity levels Different hair care
products Leave in conditioners Moisturizing shampoos Different hair
types 31
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Recap Ammonia-free hair dye causes less damage to hair Coconut
oil and egg yolk is more effective 32
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Acknowledgments Mrs. Hilliard Mrs. Gravel Mr. McMillan Colleen
OConnell 33
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Works Cited Beyak, Richard. "Elasticity and Tensile Properties
of Human Hair." Journal of the Society of Cosmetic Chemists (1968):
P.615-.626. Web. 22 Sept. 2014.. Breeling, James. "Hair Color:
Biology, Mythology and Chemistry." Hair Foundation. The Hair
Foundation, 21 May 2008. Web. 23 Sept. 2014.. C.F. Meyer, and G.s.
Kass. "Tensile Properties of Human Hair." Cosmetic Chemists 20
(1969): 615-26. Print. 34
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Works Cited Devash, Meirav. "Time for a Little Damage Control"
Women's Health Apr. 2010: 110. Academic OneFile. Web. 23 Sept.
2014.. Harrison, S. "Hair Colouring, Permanent Styling and Hair
Structure." Journal of Cosmetic Dermatology. 3-4 (2003): 180-85.
Wiley Online Library. 9 July 2003. Web. 22 Sept. 2014.. 35
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Works Cited Helmenstine, Anne Marie. "Hair Color Chemistry."
About Education. About, 18 Aug. 2013. Web. 22 Sept. 2015.. Murphy,
Pat. "What Is Hair, Anyway?" Exploratorium 25 June 1998. Print.
Personal Interview "Tensile Testing of Hair." Instron. Illinois
Tool Works Inc. Web. 23 Sept. 2014.. 36