Answer:
You should wash your equipment and then heat-sterilize it. HIV is very labile and dies within seconds of exposure to air, so cleaning your scissors with alcohol will kill the virus.
In fact: 1) autoclaving for 8 or more hours; 2) 50% ethanol; 3) Hydrogen peroxide; 4) other disinfectants (sodium hydroxide, sodium hypochlorite, glutaladehyde, formalin) - all work against HIV.
Gamma irradiation and ultraviolet light are not effective against HIV.