Hi Meka! I was doing them this winter, but haven't done one lately.
I used either: Wheat Germ, Jojoba, Sweet Almond, Avacado, Coconut, Olive Oil(s) Slathered on 'dry hair', put on a Plastic Cap or 2 (because of the drip) and got under my Heat Cap for about 30 minutes to an hour.
Then proceeded to Co-Wash, DC etc.......
Some Ladies, pre-heat their Oil in the Microwave, remember not too hot