Dr. Bronner's Peppermint Pure-Castile Liquid Soap 8oz: Our most popular scent – with a peppermint burst so pure it tingles! Scented with organic peppermint oil to cool skin, clear sinuses and sharpen mind. Our Peppermint Pure-Castile Liquid Soap is concentrated, biodegradable, versatile and effective. Made with organic and certified fair trade ingredients, packaged in a 100% post-consumer recycled bottle. All-One!