McKesson Isopropyl Alcohol is 99% strength and commonly used in medical facilities and hospitals. The high concentration formula is not ideal for use on skin or wounds, instead, the strong isopropyl alcohol is specially formulated to wear off stubborn adhesive, and get rid of dirt and grime. This rubbing alcohol is useful in medical labs, schools, or health clinics. The topical liquid 99% Isopropyl Alcohol can be used on countertops, granite, and stainless steel. First aid liquid solution comes in a 16 oz bottle. The high concentration rubbing alcohol is highly flammable - please keep away from heat, sparks, and fire.