you should really hit the Mediterranean - it's not a secret for the longest time now that olive oil does hair good
whenever I go to the beach, I spray it on so the salt water and sun doesn't damage it - and it's better than anything you'll ever buy

also, add to your olive oil this herb: Kantarion, lat.- Hipercum perforatum (sorry- don't know what it's called in English)

What made you continue spraying olive oil on your head if it took a year to get results. Most people would have quit long before that.