Combine castor oil and essential oils in a small glass bottle.
Using a spray bottle, lightly wet your hair (damp is better than sopping wet).
Place the glass bottle of oil in a bowl of hot water and wait a few minutes for the oil to heat.
Apply a nickel sized amount to damp hair, from root to ends, and massage into scalp.
Cover with a shower cap and leave on for 15 minutes.
To remove, shampoo as usual. If you need extra clarifying power, add a bit of baking soda to your shampoo.
Repeat 1 – 2 times a week.