Topicals for FBA


Quick question about topical products.
Do each unit needs to be labeled with FNSKU, or can I just send units out with EANs.
According to this link,
I presume that I need to label each unit.

Additional question - some items are too small for amazon aproved label sizes, but do not classify as small & light. How do you handle those?
Place in large bag, add label with initial quantity, FNSKU, and that’s it?

Thank you previously for answers.