Hi Charity,
Olive oil is good to apply all over the hair and keep it over night and wash off the next day. You will definitely feel the difference in the texture of your hair after few times. For a qucik treatment, apply all over the scalp and hair and wrap it in a hot towel for 20 min ans wash. As kutenurse said, if you need a qucik fix go with the readymade hair products!!!!
cheers
Janaki