HAIR COLORATION COMPOSITIONS EXHIBITING PREDETERMINED STRUCTURAL COLORATION THROUGH PHOTONIC BAND GAP EFFECTS
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United States of America Patent
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Issued Date -
Apr 11, 2013
app pub date -
Oct 6, 2011
filing date -
Oct 6, 2011
priority date (Note) -
Abandoned
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Abstract
Hair coloration compositions for application to hair are provided. In an embodiment, a hair coloration composition includes a plurality of particles. Each particle comprises a first layer of first material and a first layer of second material with an interface therebetween. The first material has a first refractive index and the second material has a second refractive index. The difference between the first refractive index and the second refractive index is greater than zero. Each particle is configured to exhibit a photonic band gap effect at the interface when exposed to incident white light.
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