Hair dyeing agents containing indigo derivatives
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United States of America Patent
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Jun 13, 2006
Grant Date -
Feb 19, 2004
app pub date -
Sep 11, 2001
filing date -
Sep 14, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Compositions and method for coloring keratin fibers consisting of derivatives of benzo[b]furan-3-one and/or benzo-[b]-thiophen-3-one compounds with special reactive components. These compositions form intensely colored compounds when applied to keratin fibers. The compositions may also be used with substantive dyes and/or oxidation colorants.
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