My new favorite product for my hair extensions is Argan Oil (also called Moroccan Oil in the salon.) Absorbed nicely into the hair shaft, it protects against frizz and humidity while leaving my long hair shiny, healthy, tangle free, and with less drying time.
I buy a cheaper version of Moroccan oil "One 'n Only Argan Oil Treatment" from Sally's (our local discount beauty store). I always receive compliments, and the scent of this product is very attractive to my husband!
Argan oil is rare. Moroccan women work very hard to shell and crush the nuts before pressing the oil used for their cooking, skin, and hair.
I've never tried pure Argan oil on my hair just by itself before, but I'm sure I could find pure Argan oil in the gourmet isle of a larger grocery store.
For now, I'll stick to the hair care lines.