Warning: Precautions: For external use only on the heels and feet. Do not swallow. If accidentally swallowed, seek immediate medical advice and take the pack with you to show which product has been swallowed. Avoid contact with eyes. Treated feet may be slippery. Take extra care when walking on smooth surfaces. Stinging may occur in deep cracks. Do not use if sensitive to any of the ingredients. Not for use on children under 12 years, except on medical advice. Seek medical advice before use if pregnant or breastfeeding. Stop use if skin irritation or rash occurs during use. Possible side effects: Rarely, allergic reactions such as skin rash, blistering, and skin peeling may occur. Blackening of treated skin on the sole of the foot may occur very rarely. If you notice these or any other side effects, stop use and speak to your doctor or pharmacist, they will tell you what to do.