Metal combs typically have fine teeth, so they're not as easy to clean as the wide-toothed variety. A dirty metal comb can harbor nasty bacteria or grime that will make your hair look dull and unhealthy. It's especially important to sanitize a metal comb if you've used it to remove lice or nits from your hair.
Pull hair and other debris out of the comb's teeth.
Fill a bowl with hot water. Ideally, the temperature of the water should be around 130 degrees Fahrenheit.
Add a few drops of mild liquid soap to the water and then add 1 tablespoon of unflavored mouthwash, bleach or white vinegar.
Dip the comb into the water. Hold the comb by the handle, if it has one, and swirl it around in the water to knock loose any stuck-on debris.
Let the comb soak in the water for at least 15 minutes or up to one hour. If the comb didn't have a handle and wasn't fully submerged, repeat the process with the unwashed part of the comb.
Remove the comb from the bowl. Shake off the excess water and lay the comb on a towel to dry.
Avoid sharing your comb with other people. If you do lend a comb to someone, sanitize it before using it again.
If you're cleaning a lice comb, seal it in a plastic bag and stick it in the freezer for 12 hours to kill the lice and their eggs.
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