I've not done that many hairjobs in my life. I'm a hair fetish guy but when it comes to orgasm time, I'm all about the PIV. But if your girl is savvy to the value of cumditioning, remember you can capture it in a non-spermicidal condom and apply it like any hair product. I used to do this with my cute long hair chub fwb. Work it into the hair especially the ends, make a ponytail or braid, cover with clear wrap and some elastics, shampoo in the morning.