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The Performance of Purple Pigments in Cosmetics

Andie Le

Advanced Chemical Technologies II

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Why Purple?

  • Purple is hard to formulate well
    • Uneven color distribution
    • Weak pigmentation
    • Doesn’t blend well

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What’s the goal?

  • Create an eyeshadow that performs well
  • Compare it to other products on the market

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  • Sample Analysis

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So far…

  • Added ingredients one at a time per sample set
    • Pigment, Filler, Isopropyl Myristate, Zinc Stearate, Mineral Oil
  • RGB values
  • Grayscale values
  • Photos/Imaging

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Photo vs. Scanning

Upper Swatch:

Single pass

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Lower Swatch:

Multiple passes

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9 points taken on each swatch: Corners, middle edges, center

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Higher averages = more opacity

Lower standard deviations = more uniformity

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What’s Next?

  • Other ingredients
    • Other oils, boron nitride, glyceryl caprylate
  • X-ray Photoelectron Spectroscopy

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Acknowlegements

  • Dr. K. Schug
  • Dr. F. Foss
  • Abiud Eliezer Portillo
  • Lars Nguyen

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  • Eman A., Brandon B., Catie F.

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Thank you!

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