MAX STRENGTH: Formulated with 40% non-nano zinc oxide, Pain in the Butt is the strongest protection against diaper rash available on the market. WORKS ON CONTACT: Immediately protects skin from diaper rash and begins to heal painful symptoms on contact. CLEAN INGREDIENTS: Enriched with premium plant-based extracts to soothe and repair delicate baby skin on contact. Free from petrolatum, lanolin, mineral oil, parabens, phthalates, dyes and other toxic chemicals. MADE IN USA: Proudly made in the USA where strict quality and regulatory standards mean you can trust our premium products to be safe, effective and socially responsible.