I don't see any reason why you couldn't leave in the coconut oil in your hair. I know people who use it as a moisturizer.
**********************************************************
You might be interested in the No Poo Shampoo method:
http://www.naturemoms.com/no-shampoo-alternative.html
Dissolve about 1 tablespoon of baking soda in just enough water to make a paste. Apply this to your roots only; work it in and let it sit for a minute.
In order to stimulate blood flow, clean your pores and get off built up grime, use your finger tips to scrub your scalp. Start by making a circle on the top of your head in the area you’d wear a crown. Focus on the back of this circle to begin with. Next, fill in the circle. This is where your part will be; grease here affects the way your hair looks. Trace while still scrubbing with your fingertips around the bottom edge of the circle. Keep making scrubbing circles underneath each one, drawing lines in circles around your head.
Lastly, scrub the back of your skull and your temples/sideburns. This will result in less grease and more growth. After doing this, your scalp will feel alive. Many women swear their hair grows faster after a visit to the salon — it does, and this massage method is why.
When scrubbing, you’re actually rubbing your fingers back and forth in short movements. Be gentle; you don’t want to break your hair. Next, pour about 2 tablespoons of apple cider vinegar into a cup and add water. (I keep two plastic 12-ounce cups in my shower and just mix when I get in.) After you rinse the baking soda out, pour the apple cider vinegar over the ends of your hair, let it sit for a minute and then rinse it out. That’s all there is to it!
No 'Poo Troubleshooting
Remember, there is a transition period from two weeks to two months depending on the person. Here are a few tips:
• If your hair becomes frizzy, try using less baking soda or leaving it on for a shorter period of time. Adding honey may also help.
• If your hair becomes greasy, try using less apple cider vinegar, switching to lemon or lime juice, leaving out the honey, and/or using a comb instead of a brush. Also, make sure you’re applying the apple cider vinegar just to the ends of your hair.
• If your scalp itches, try the following essential oils; tea tree, lavender, rosemary. If your hair becomes dry, try a tiny bit of oil (any oil, I use olive) smoothed on bottom of hair.
Ready to make the change? Sure! Don’t be afraid to go no 'poo. You know how to do it! Enjoy the journey – you’re on your way to a healthier you!
************************************************************
I've also heard of folks using Borax (the laundry booster) instead of baking soda.
iolite