Sales negotiation
A salesperson maintains warm eye contact while the client speaks, showing genuine listening, then naturally relaxes their gaze so as not to be intrusive. The client feels heard and elaborates on their needs.
Hold the gaze above all when the other person is speaking (a listening signal), and release it regularly; permanent contact becomes an oppressive fixity.
Reinforces the feeling of being listened to; lends credibility without a word.
A gaze that is too intense or too scrutinising makes the client uncomfortable and arouses distrust.