Hello
Read this very carefully and at least two times and you will get assurance , answer and will get rid off
anxiety.
There is a small , but definite , risk of
HIV transmission to personnel who works with HIV containing material ( as in your case it was razor by HIV infected person) , particularly with sharp objects are used.
Large multi-institutional studies have indicated that the risk of HIV transmission following SKIN PUNCTURE ( in your case there was not a skin puncture) from as harp object that was contaminated with blood from a person with documented ( your person was not documented proven HIV infected , although ,he was claiming ) HIV infection is LESS THAN 0.3 % and a
mucous membrane exposure it is 0.09 % .
Transmission of HIV through intact skin has not been documented.
You mentioned that you got a test and it is NEGATIVE , so there is not a single cause of concern .
If you would have been infected certain symptoms may have been appeared .
In my opinion be sure that you didn't got any infection and enjoy life without any ANXIETY &
STRESS.
Good luck.