Answer - Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. Some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.
Many harsh chemicals like baby powder(which some adults use), deodorants, harsh chemicals in lotions and spray on colognes. Different things that are bad for your skin but many adults use everyday. <span />