If you have any build up in your hair, it could cause a problem. I used the CHS Silk Leave-in (it had mineral oil) and PMRT. My hair was disgusting to say the least. Haven't had problems with the PMRT before or after.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me