We have been giving ourselves home manicures now for 2 months or more. We are told washing our hands for 20 seconds eliminates up to 92% of microbes. There’s a way to kill even more germs: freshen-up your nail polish every fourth day! Why? Chipped nails create niches for bacteria and other microbes to remain. So if you change your lacquer frequently you’ll harbor less germs. Another tip within a tip: nails trimmed to 2 mm. block most germs!