I have used some of the above conditioners and detanglers, but sometimes, with lots of new growth, they just stopped being effective!
I have found that the only thing that can get me out of a jam 100% of the time is a serum applied to wet hair. If I use enough of this, if will correct whatever coarseness/clumping/tangliness I encounter in the shower. If you think about it, usually what makes our conditioners and leave ins have slip is the silicone, IMO.