I dont know if this is considered an oil treatment, but i truly LOVE Loreal professional mythic oil..
I bought it because my hairdresser recommended it,but to be honest i didnt beleive it was gonna do anything for my hair (very long, dark, previously blonde,very straight, greasy roots in 2-3 days)...
It truly makes my ends tidy, shiny, easier to blowdry...
And my mother(super super dry semi curly hair,greasy in 10 days) is obsessed with it, as well as my best friend(baby fine semi curly hair),and we all have very different hairtypes.
For me it works better than kerastase oleo relax which is too heavy for me.