Job offer and scars

Hi everyone,
I’m due to start a role in the NHS and I’m trying to understand how the “bare below the elbows” policy works when someone has visible scars on their arm.
I have old scars I feel quite self-conscious about. I understand infection control rules are important and I’m not trying to avoid following them, but I’m worried about how this will be handled in practice.
Has anyone had experience with this? Also scared they will withdraw the offer