Context
I am a male in my early 20s. My work requires me to frequently communicate face-to-face with customers that are often strangers to me. Because of this I tend to take good care of my appearance. I neatly trim my beard, put product in my hair and work out a few times a week.
When I'm in a conversation with a customer I pay attention to looking them in the eyes to show I'm paying attention to the conversation we are having. But lately something else has caught my attention.
When I'm the one talking I notice that the person I'm talking to switches between eye contact and looking at my mouth around every few seconds. While I'm not particularly an insecure person this can make me pretty unsure of whether (for example) I have something between my teeth or I'm distracting the person with the way I talk. While it doesn't particularly seems like it's distracting them, it does distract me from the topic of the conversation.
Question
How can I stop people from looking at my mouth when I talk, or is this happening unconsciously?
Extra
- I'm sure there is actually nothing between my teeth
- I have had braces so I think I'm eligible to say my teeth are 'pretty'
- The conversations are always in my mother language (so no 'weird mouth movement')