Spark ignition gasoline and compression ignition diesel engines differ in how they supply and ignite the fuel. In a spark ignition engine, the fuel is mixed with air and then inducted into the cylinder during the intake process. After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion.
1 If your skin is too sensitive, dilute tea tree oil with some baby shampoo. Add 10-20 drops of tea tree oil to 1/2 cup of baby shampoo. Use this daily to wash your scalp and hair till you get rid of itchy scalp.  You can even massage diluted tea tree oil to your scalp.
Testimonials: This stuff leaves your hair feeling VERY clean and shiny. My scalp is usually itchy and gets oily quickly, with this it leaves my scalp refreshingly clean no itch. I use this first lather and leave in for few minutes, rinse then follow with Natural Hair Loss Shampoo lather, leave in few minutes, rinse.I dont currently use conditioner-just infusium 23 leave in liquid on just the ends of my hair. use this first lather and leave in for few minutes, rinse then follow with Natural Hair Loss Shampoo lather, leave in few minutes, rinse. I dont currently use conditioner-just infusium 23 leave in liquid on just the ends of my hair.