Nails should always be trim and neat. Long nails with a visible black layer of dirt in them immediately provoke resentment among co-workers and interviewers. So, remember to check your nails each day before you step into an office.
6. Socks and shoes shouldn’t smell, even if you need to take them off before entering a few zones where footwear is not permitted. Use freshly-washed socks and clean your shoes daily.