Final answer:
Hepatitis B virus (HBV) is the most difficult form of hepatitis to kill on salon surfaces; it can remain infective for up to a week, and the CDC recommends using a solution of 10% bleach for disinfection.
Step-by-step explanation:
The form of hepatitis that is most difficult to kill on a salon surface is Hepatitis B virus (HBV). This virus can remain infective for up to seven days on surfaces, making it especially resilient. Effective sterilization practices and protocols are crucial in preventing the spread of HBV in salon environments. The virus can be transmitted through blood and other body fluids, and even surfaces that look clean can still potentially harbor the virus. The Centers for Disease Control and Prevention (CDC) recommends using a solution of 10% bleach to properly disinfect surfaces that may have come into contact with HBV.