Hmm, do you have hard water? I noticed in another thread that you're using VO5 TT. In recent times I've come to the conclusion that some of the cheap COs react badly with hard water forming a gummy residue with it that builds up pretty fast (Suave COs are the worst in such a case), you may have to use less final CO or to make it easier to apply dilute it with a little distilled water. If that still doesn't work you're going to have to pay a little more for something better than drugstore brands...
2A/3A, medium length, layered, colored dark/medium ash blonde - "CGer" since April '02.
"Converting the 'curlskeptics' one curly head at a time..." HWHC