The best deep conditioner is olive oil.
Do you have a dry, damaged and not to good looking hair ?
If you haven't try it you have to try it and she the difference.
You just add olive oil to your hair and rub it in, wrap a towel on it so the olive oil wont infect to your furniture and so on.
Wash it off aftur 1 hour to 2 hours and your hair will be shiny and smooth!
If you have a really dry hair it is very good to add the olive oil in the evening and go to sleep with it and wash it off in the morning.

Olive oil is the best deep conditioner I have ever use and my hair has never looked so shiny and healthy after I began doing this.