Baby Mild Pure-Castile Liquid Soap Pure-Castile Liquid Soap 3.79 litre (1 gallon). With no added fragrance and double the olive oil, our Baby Unscented Pure-Castile Liquid Soap is good for sensitive skin & babies too (though not tear-free). Our Pure-Castile liquid soap is concentrated, biodegradable, versatile and effective. Good for just about any cleaning task. Face, body, hair & food, dishes, laundry, mopping, pets & clean your house and body. Natural, Organic, Biodegradable, Fairtrade