Other Information: Do not use if the printed seal is broken or missing prior to opening. Keep away from direct sunlight. Misc: Corrector. Stops fungus! The strongest antifungal treatment without a prescription. Undecylenic acid 25%. Absorbs Quickly: Maximum strength brush-on treatment eliminates most fungus on cuticles and skin surrounding nails. Questions or comments? To report a serious adverse event and for information or comments on this product call us at 1-800-953-5080 9:00 am - 5:00 pm EST or visit www.sallyhansen.com. Salon tested. Results guaranteed (1-800-953-5080 [USA/Canada only]). America's No. 1 nail brand. Made in USA.