GENTLE CASTILE SOAP Kirk’s castile soap is designed to be gentle on your skin. SENSITIVE SKIN FRIENDLY Kirk’s castile body soap is clinically tested, safe for sensitive skin. Our soap is Vegan, Non GMO Certified and Free of Sulfates, Parabens, Phthalates, EDTA, Colorants and Gluten ; Kirk’s Gentle Castile Soap is great for the whole family!