Roux's Fanci-Ful Lucky Copper temporary haircolor rinse can be a lifesave in betwen full colorings, either at home or in salon. It has been around for a very long time and I have used if for years and have been quite satisfied with the results. It is so easy to use - you just pour it on and rinse out . It revives color and colors roots in between a permanent color . There is no offensive odors , no dyes , henna , etc . It is just what it says - a temporary rinse so if you chose a color you are not too thrilled with , it will rinse out easily . It is a good tool for trying a color that is a little different - for instance , this copper one may be a good way to " try on" being a redhead for a day - if it is not you , no hard done. I like this product because it is very gentle on my fine hair and contains no harsh dues , peroxides or chemicals , yet it does a nice job of covering grays and touching up roots .