Other Information: Store Between: 59 degrees - 86 degrees F (15 degrees - 30 degrees C). Protect from freezing, if freezing occurs, warm to room temperature. Tamper Evident: Do not accept if safely seal is torn, broken or missing. Misc: Undecylenic acid (20%). Eliminates athlete's foot that causes itching. Advanced formula that helps relieve itching, burning, cracking and scaling. Hong Killer is available in: Solution Cream, Spray powder, ultra, powder & nail formula. Questions or Comments? (305) 805-3456 Monday-Friday (9 am - 5 pm EST). www.efficientlabs.com. Made in USA.