This product contains Alpha Hydroxy Acids (AHA) and Salicylic Acid and is not suitable for sensitive skin. Do not use on inflamed skin or open wounds. Do not use if you have sensitivity to any of the ingredients in the ingredient list. May remove nail polish. If irritation occurs discontinue use, wash feet immediately and consult a physician. AHA may increase your skin's sensitivity and particularly the possibility of sunburn. It is recommended that prior to exposure to the sun, users cover areas where AHAs have been applied with sunscreen, wear protective clothing and limit sun exposure while using this product and for a week afterwards. Contact of the product with the skin must be of limited frequency and duration. This product may cause skin irritation and may increase sensitivity. All skin types are different, and you may have a specific allergic reaction. If concerned test a small area of foot before use: place a coin sized amount of liquid from inside the bootie onto your foot and leave for 20 minutes before washing feet thoroughly. Wait one day before proceeding to use. If you have an allergic reaction or feel any irritation or burning sensation, discontinue use and wash feet immediately. This product is not suitable for people with diabetes, poor circulation, eczema or who are prone to cellulitis, children under the age of 12, women who are pregnant or breastfeeding.