What type of alcohol is commonly used as an antiseptic for skin cleansing?

The use of 70% isopropyl alcohol as an antiseptic for skin cleansing is widely accepted due to its effectiveness in eliminating a broad range of pathogens, including bacteria, viruses, and fungi. This concentration is optimal because it balances the alcohol's ability to denature proteins in microbial cells while also allowing it to maintain enough moisture to penetrate the skin effectively. When alcohol is too concentrated, it evaporates quickly and may not penetrate the cellular structures effectively, reducing its antimicrobial action. The 70% solution also contains water, which assists in slowing the evaporation rate, enhancing contact time with the skin and thus improving antiseptic efficacy.

While other types of alcohol, such as ethyl alcohol, can also be used as antiseptics, the specific formulation and concentration are critical in ensuring the best outcomes for antiseptic activity. In this context, 70% isopropyl alcohol is recognized for its reliable performance and is commonly found in healthcare settings for skin disinfection prior to procedures or injections.