Organic Liquid Castile Soap Derived from Organic Sunflower and Organic Coconut Oil. Palm free.Sourced from UKGentle yet effective liquid soap Read more Castile Soap Uses Skin You can use Castile Soap like a normal face and body wash. Apply a small amount of soap to your hands or a washcloth and wash as normal. Why not add a couple of drops of your favourite essential oils to make a beautiful, scented body wash? Citrus oils are perfect for this for a lovely, zesty start to the day. Hair Apply a 50p sized amount of soap to wet hands and work into a lather onto wet hair. You may need more or less soap depending on the length of your hair. Rinse thoroughly and condition if required. Add a few drops of essential oil to the Castile Soap to power up the benefits. Try Rosemary for its hair growth and strengthening properties.