Pretreatment agents for acidic hair dyes
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United States of America Patent
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May 2, 2006
Grant Date -
Mar 11, 2004
app pub date -
Jul 12, 2001
filing date -
Jul 17, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Pretreatment agents for hair colorings with acid dye comprising at least one cationic polymer selected from the group consisting of polymers having amino groups and polymers having quaternary ammonium groups. The pretreatment agents for hair colorings with acid dye are used for improving coloring ability and color fastness of hair colorings with acid dye.
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