Ingredients in commercial shampoos, such as propylene glycol, sodium lauryl sulfate, synthetic colors and synthetic fragrances can cause skin irritation, allergic reactions and other harmful effects, according to the Organic Consumers Association. You can make your own conditioning shampoo with liquid Castile soap and a few other natural ingredients. Purchase true Castile soap, made with olive oil, rather than a Castile-style liquid soap made with other kinds of oil. Use organic Castile soap to reduce your exposure to harmful chemicals even more.
Pour 4 ounces of Castile soap into an 8-ounce bottle with a flip-top cap.
Add 2 tablespoons of olive oil, almond oil, avocado oil or any other cold-pressed oil that you can buy at a health food store.
Add up to 12 drops of your favorite essential oil such as rose, lemon, rosemary, lavender or any that you prefer. Pure essential oil is a natural fragrance distilled from the blossoms, leaves or roots of herbs.
Fill the bottle with water to the top, leaving about 1/2-inch of space at the top. Put the lid on and rock the bottle up and down until the ingredients are combined.
Use less of your Castile soap conditioning shampoo than you would commercial shampoo.