Chlorhexidine Pre-Op Wash is an antiseptic and disinfectant, effective against a wide range of vegetative Gram-positive and Gram-negative bacteria. It is ineffective against acid-fast bacteria, bacterial spores, fungi, and viruses. Chlorhexidine is most active at a neutral or slightly alkaline pH and blood and other organic matter reduce its activity. This product is used to thoroughly cleanse and disinfect your skin prior to an operation. If your doctor or specialist has recommended Chlorhexidine Pre-Op Wash, it will help reduce the micro-organisms that live on healthy skin. You should use a clean sponge or flannel to assist you in washing your whole body thoroughly. Apply and lather all over the body, paying special attention to skin folds and other areas where bacteria may accumulate.