Naturally powered by plant surfactants, organic citrus acids and essential oils. Dissolves soap scum, hard water stains and mineral deposits. Removes mold, mildew stains & rust. Leaves the bathroom smelling fresh without the use of synthetic fragrances. Non Toxic and safe - FREE OF: bleaches, ammonia, petro-chemical solvents, sulfates (SLS/SLES), phosphates, synthetic fragrances, dyesExpirationThis product has no expiration date or the manufacturer has not provided an expiration date.