Hello,
Herpes is a virus and it spreads by contact. The contact can be due to physical contact or sexual etc. These are common ways of infection: 1] By kissing someone if u have cold, or sore throat 2] Through vaginal or anal intercourse or oral intercourse 3} during pregnancy by mother to baby at birth 5} touching the sore infected outbreak like fingers, eyes etc can also possibly pass virus.
Dishwashing liquid will not kill the virus or stop its transmission.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Oh and kind of a random question but on this subject, will a dish washing machine kill the herpes virus?