I use the top knot gel as well.
It hasn't been perfect in correcting the problem but its MUCH better than anything else I have tried. You should get it a try. I got mine from petedge.com It only makes sense to order from there if you have a large order ($60+) b/c they will add additional fees if you order less stuff. If you aren't looking for a bunch of (random) stuff now, you can try another website. On petedge it was like 6.99. If you type "petsilk top knot gel" into google, it will list a few other websites that carry it but you will be paying around 13.99 for it then. Good luck!