My PQ problem was with PQ4 as the 2nd ingredient in a gel. However, one of my favorite gels has PQ10 (I think!) as one of the top ingredients and I don't have a problem with, who knows!!!???
2C/ Coarse/ Normal porosity/ SW Florida/ Salt & Pepper
Cleanse: CJ Daily Fix, JC Cleansing Cream, TJ Tea Tree Condish
Condish: JC Too Shea, CJ Curl Rehab (both as RO & LI)
Stylers: UFD CM, CJ PP, JC Spiralicious, Darcy's Cream Gel & Cocoa bean whip